My Double-Wick Candle Is Fine Initially but Overheats Later — Should I Test Two Smaller Wicks Rather Than Changing to One Large Wick?

My Double-Wick Candle Is Fine Initially but Overheats Later — Should I Test Two Smaller Wicks Rather Than Changing to One Large Wick?

 

C1 pair ₹11.80 a candle (20-pack ₹118.00) Cotton Braided ₹12.00 a wick Steel Wick Holder ₹50.00 each
Double wick, late heat
Check spacing first, then compare your pair, a smaller pair and one centred wick, three candles each, to the floor.
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Lavender Fragrance Oil
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Eco Candle Wicks
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Eco Candle Wicks
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"One of the best wax for container Candles. Easy to work with, especially if you are a beginner."
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Luxury Soy Wax CSI 464 (Flakes Form) For Container Candles
Reviews collected and published through Judge.me on candlemakingsuppliesindia.store. They are general reviews of the products named on each card, not assessments of the advice set out below. Wording is unedited.
Shop Eco Candle Wicks — from ₹94.40 Ask about a step between C1 and C2
✓ Prices verified 7 October 2026, stock checked per pack ✓ GST invoice; MSDS and IFRA documentation on request ✓ Raw materials only — CSI does not sell finished candles
CSI Wick Diagnosis · Double Wick, Late Heat
Test two smaller wicks first: they keep the two heat zones that made the top work while cutting the heat that builds late. One large wick is a different design with its own early and late risks, so test it only as the comparison.
₹11.80
a C1 pair per candle, the only smaller CSI pair below a C2 pair (₹18.88) · CSI live pricing, October 2026
Quick answers — read this first
My double-wick candle is fine at first but overheats later. Should I test two smaller wicks rather than one large wick? Yes, test two smaller first. A smaller pair keeps two heat zones spread across the jar, so the pool can still reach the wall early, with less total heat late. One large wick commonly tunnels in the top third or, if it's big enough not to, runs a tall, hot centre at the bottom. Test it too, as a fair comparison.

What is "two smaller" at CSI? From a C2 pair, a C1 pair: there's no sized, tabbed wick between C1 and C2. From a Cotton Braided pair, a C2 pair.

What should I check first? Spacing and lean (wicks drifting together or towards the glass), draughts, the floor you stop at and the last session's length. Those cause late heat in a pair that's otherwise right.

What does the test cost? Nine 300 g candles, three arms: ₹1,760.20 for wax, a C1 20-pack and a Cotton Braided 10-pack, with your own oil, jars and holders.
The short answer
Verdict: two smaller first. Keep the geometry, cut the fuel. A single large wick is a different design with its own early and late risks; include it as one arm, don't jump to it.
Geometry: in a 9 cm jar (8.3 cm inside, walls assumed) the pool is 54.11 cm²: 27.05 cm² per wick for a pair, all 54.11 cm² for one wick in the centre.
The test: current C2 pair, C1 pair and one centred Cotton Braided, three 300 g candles each, 4-hour sessions to a 1 cm floor, judged third by third with readings from your own non-contact thermometer.
Approve: the arm whose three candles reach the wall by burn 2 and stay inside every limit in the top, middle and bottom thirds (in-house rule). If none does, the fix is spacing, load, floor or jar, not a CSI half-size.
Shop: Eco Candle Wicks C1/C2 · Cotton Braided Wicks Ready Made · Steel Wick Holder · Luxury Soy Wax CSI 464 · all candle wicks
In this guide
Two smaller or one larger: what the test is checking Your 9 cm jar (8.3 cm inside), 300 g at 8%. Hypotheses for the test, not results. Current: C2 pair 4.2 cm apart, 2.05 cm to the wall full pool, normal flames fine, as you found two tall flames, deep pool hot lower glass: the problem Two smaller: C1 pair same holes, smaller wicks smaller flames; pool must reach the wall by burn 2 (check) moderate flames, shallower pool: the hypothesis to test One larger: Cotton Braided one wick, centred one tall flame, a ring of wax at the edge: early tunnelling risk one tall flame, deep centre heat concentrated: late risk Top third, burn 2 Bottom third, last sessions Three candles per column, to a 1 cm floor (46 g). The column whose three candles pass every third wins.
What each arm of the comparison is expected to do, top third against bottom third. The current C2 pair is fine at the top and hot at the bottom, which is your report. The C1 pair has to prove two things: that it still reaches the wall early, and that it runs cooler late. One centred Cotton Braided has the opposite risks: a ring of wax early, a hot centre late. These are hypotheses for the test, not CSI results.
Wicks · C1 pair ₹11.80 a candle · C2 pair ₹18.88
Eco Candle Wicks: a C1 pair is the only smaller CSI pair below C2. A C1 20-pack covers three test candles
Spacing · ₹50.00 a holder
Steel Wick Holder: three holes in a line for single, double or triple wicks; hole spacing not stated, so measure it
WhatsApp +91 7397976926
C2 pair too hot late, C1 pair too weak early? Ask what we can supply between them; we'll say honestly if it's nothing.
Straight answer
My double-wick candle is fine initially but overheats later. Should I test two smaller wicks rather than changing to one large wick?
Yes: test two smaller wicks first, and include one large wick only as the comparison. A double-wick candle that's fine for the first half and too hot at the bottom usually has the right layout and slightly too much fuel for the lower jar, where heat builds up in the glass, the pool goes fully liquid and both flames grow. Two smaller wicks keep the layout that made the top work (two heat zones, each melting about half the pool), so the pool can still reach the wall early, while cutting the heat that piles up late. One large wick changes the design: it must melt the whole width from the centre, so it commonly tunnels in the top third, and a wick big enough to avoid that commonly runs a tall flame and a hot centre at the bottom, the problem you started with. At CSI, two smaller from a C2 pair means a C1 pair; there's no sized, tabbed wick between C1 and C2. Before buying anything, check the free causes: wicks drifting towards each other or the glass, a draught, very long last sessions and burning past a 1 cm floor (a common rule of thumb). Then burn three candles each of your current pair, a C1 pair and one centred Cotton Braided to the floor, and choose the arm that passes every third. If that's none, the next levers are spacing, load, floor and jar, covered in the late-burn heat hub.
One line: keep two flames and make them smaller; test one big flame only as the comparison, because it trades late heat for early tunnelling.
The comparison, priced: nine 300 g candles at 8% need 2,484 g of wax: three 1 kg packs of Luxury Soy Wax CSI 464 (₹1,522.20), an Eco C1 20-pack (₹118.00) for the C1 pair and a Cotton Braided 10-pack (₹120.00) for the single: ₹1,760.20. Add a Steel Wick Holder pack of 10 (₹500.00) if you have none: ₹2,260.20. In stock on 7 October 2026.
Eco C1 20-pack — ₹118.00

Your double-wick candle, described precisely

Fine early, hot late is a different problem from hot from the start.

Your symptom, stated exactly: a two-wick container candle that burns well for its first half (both flames normal, a full pool to the wall, the glass comfortable on your readings) and then, somewhere in the lower third, the flames grow, the pool goes deep and fully liquid, and the lower glass reads hotter than your limit. You're weighing two fixes: two smaller wicks, or one larger wick in the centre. If your pair is too hot from the very first burn, that's the double-wick candle with two large flames and too much heat; this post is about the late version.

The worked example, labelled: your own jar about 9 cm across (8.3 cm inside with 0.35 cm walls assumed; CSI lists no 9 cm jar, and its nearest wide listing is the Apothecary Glass Candle Jar with Dome Lid at about 10 cm), filled with 300 g at 8% = 24 g fragrance + 276 g wax (load as a percentage of total weight) to about 6.5 cm, so about 46 g per cm and a 1 cm floor of 46 g. Two Eco C2 wicks sit 4.2 cm apart on a diameter, 2.05 cm from the glass. Above the floor there are 254 g to burn, about 85 g per third.

Safety first, plainly: two flames growing late in a jar is a safety problem before a quality one. Stop the session if either flame leans towards the other or the glass, smoke is continuous, or the flames keep growing; let the candle cool where it stands. Never judge glass heat by touch: use your own non-contact thermometer at the same marked points each time (CSI lists none; our Pen Thermometer is for wax), against a limit you write down before testing. The "Safe for hot-pour up to 85°C" wording on some CSI jar pages is a pour figure, not a burn rating; we give no glass-temperature limit.

Why a pair that's right at the top runs hot at the bottom

Two flames heat one jar. Near the bottom, the jar has nowhere left to put it.

Four things change as a container candle burns down, as common observations rather than CSI data. The glass above the pool has absorbed heat for hours and stops acting as a heat sink. The pool becomes fully liquid and deeper relative to what's left, so each wick has more fuel to draw. There's less solid wax below to absorb heat. And the flames sit closer to the base. A single wick feels all of this; a pair feels it twice, because two flames are putting heat into the same glass, and the two hot zones increasingly merge into one in the middle. The mechanism is set out in why a correct wick becomes too aggressive lower down; the published double-wick siblings a multi-wick candle perfect for the first half but extremely hot near the bottom and a double-wick candle that becomes dangerously hot near the bottom cover the general case.

The geometry explains why "two smaller" is the natural first step. In the worked jar the pool is 54.11 cm². With two wicks each serves about 27.05 cm²; with one in the centre, that wick must melt all 54.11 cm² and reach 4.15 cm to the glass in every direction. Smaller wicks reduce the fuel burned per hour without changing how the heat is spread, which is exactly what a candle that's right at the top and wrong at the bottom needs. A single wick changes the spread, which is why it tends to fail somewhere else.

Spacing is the free check
At 4.2 cm apart your wicks are 2.05 cm from the glass. A commonly used starting point (judgement, not a rule) is each wick about halfway between centre and wall: in this jar about 4.15 cm apart and 2.08 cm from the glass, a little further apart than now. Measure your pair in a spent candle; wicks that drifted together during setting make one hot centre, wicks that drifted outwards heat the walls. The Steel Wick Holder's page states no hole spacing, so measure that too.

Late overheating in a pair: causes, ranked

Check what you're doing to the pair before you change the pair.

The ranking is our judgement for a double-wick candle that's fine early and hot late. Signs are common observations; CSI publishes no heat data for any wick or jar.

Cause ranking · double-wick, fine early, hot late
Using = how the candle is burned · making = wicks, spacing, formula, jar · ₹ from CSI live pricing, 7 October 2026
Cause What you'd see Discriminating test Fix Cost
1. Wicks drifted together or outwards (making: production) One very hot centre, or hot walls on the wick sides; uneven tabs in spent jars Measure spacing and wick-to-wall in spent candles Hold the pair at a measured spacing while setting ₹50.00 a holder
2. Flames leaning into each other (making or using) Flames bend together late; a merged hot zone Watch the last third in still air; check spacing Wider spacing; still air Nothing
3. Draught (using) Flicker, soot on one side, uneven late heat Same candle in still air Placement advice on the label Nothing
4. Long last sessions or past the floor (using) Hot only when sessions run long or below 1 cm Session log; stop at the floor Tested maximum session and floor on the label From ₹413.00 for 500 care stickers
5. Pair slightly too strong for the lower jar (making: wick) Every candle hot in the bottom third, even centred, in still air, to the floor C2 pair vs C1 pair over the full life The smaller pair, if it reaches the wall early ₹118.00 (C1 20)
6. Heavy load or dense oil (making: formula) Heavy mushrooming late; flames flare Same pair, one load step lower within both ceilings Load chosen by full-life test Your own oil test
7. Jar narrows or has a thick base (making: jar) Heat jumps where the jar narrows or near a heavy base Inside diameter at 2–3 heights; base thickness Design for the narrowest point; another jar Your own jar test

Causes 1 and 2 are the double-wick-specific ones, and they're why the published sibling two wicks leaning toward each other asks about spacing before size. Cause 5 is the one this post's test settles. If causes 1–4 are clear and the bottom third is still hot, the pair is too strong for the lower jar, and the question in the title is the right one.

Two smaller or one larger, over the whole candle

Every wick choice moves the problem somewhere. Pick where you'd rather it went, then test it.
What each option commonly does · top, middle, bottom
Tendencies, not CSI data · worked jar 8.3 cm inside, 300 g · ₹ per candle from CSI live pricing, 7 October 2026
Option Top third Bottom third Main risk Wicks per candle
Current: C2 pair Full pool, normal flames (as you found) Tall flames, deep pool, hot glass Late heat (your report) ₹18.88
Two smaller: C1 pair Smaller flames; must still reach the wall by burn 2 Moderate flames, shallower pool Slow pool or a thin ring early ₹11.80
One larger: Cotton Braided, centred One tall flame; a ring of wax at the edge is common One tall flame over a deep centre Early tunnelling, a hot centre late ₹12.00
Mixed pair: C2 + C1 Uneven pool, one side melts first One side hotter Asymmetry; not recommended ₹15.34

The C1 pair's real risk is the opposite of your problem: smaller wicks may not get the pool to the wall in time on the first burns. That's why the test judges the top third first, and why "reaches the wall by burn 2" is part of the rule; whether early tunnelling that catches up is acceptable is a judgement the published sibling a 9 cm candle too hot halfway down without causing early tunnelling works through. The single wick's risk is structural: one flame has to do all the work from the centre. When a wide jar's single wick looks good, it's often because it's big enough to run tall, and that's the flame you don't want near the base. If you're moving from one wick to two (or back), more than the melt pool changes; changing from one large cotton wick to two smaller wicks lists what to revalidate.

Argued against our own interest: CSI's range gives you exactly one step down from a C2 pair. If the C1 pair tunnels and the C2 pair overheats, the honest answers are a different spacing, a lower load within both stated ceilings, a higher floor, a shorter maximum session, or a wick from a range with finer steps, which we may not stock. Ask on WhatsApp and we'll tell you plainly.

The full-life comparison: three arms, nine candles

Judge the top first and the bottom last, on the same candles.

Test candle, labelled: 300 g at 8% = 24 g fragrance + 276 g wax in your jar. Arm A: current C2 pair at your current spacing. Arm B: C1 pair in the same holes. Arm C: one Cotton Braided, centred. 9 candles; 216 g of oil and 2,484 g of wax. Session validity for a jar this wide: about 3–4 hours (judgement).

1
Write the limits firstFlame band (many makers use about 2.5–5 cm, a rule of thumb), smoke rule, glass line at fixed points for your own non-contact thermometer (two wall points at 2 cm and 1 cm above the inside base, on both wick sides), and "pool to the wall by the end of burn 2".
2
Pour with fixed spacingOne wax and oil lot. Hold each pair at the same measured spacing with a holder; centre the single. Record the spacing in every jar. Cure 3 days.
3
Burn 4-hour sessions to the floorStill air, trimmed to 5–6 mm, about 7 sessions to 46 g left at a worked-example 10.0 g an hour. Weigh before and after each session; log flame heights, pool reach and depth, lean, soot and readings hourly.
4
Judge by thirdUse grams to mark the thirds (about 85 g each above the floor). Top third: pool reach. Middle and bottom: flame, lean, depth and readings, with the last 2 cm logged every 30 minutes.
5
Inspect the spent jarsGrams left, soot on the glass, and where each tab ended up. Pairs that ended closer together than poured point back to spacing, whatever the size.
The approval rule (ours, labelled)
Written before burn one. An arm passes when all three candles reach the wall by the end of burn 2, keep flames inside the band without leaning together or towards the glass, show no continuous smoke, and keep every glass reading below your line in the top, middle and bottom thirds and the last 2 cm, ending at the floor. One candle failing fails the arm. If B and C both pass, choose B (two heat zones, lower late heat, ₹7.08 cheaper than the C2 pair). In-house rules, not an industry standard; the section-by-section sheet is evaluating top, middle and bottom separately, and the reading method is evaluating container temperature consistently.
Test materials and ₹ · 9 candles
CSI live pricing, 7 October 2026, in stock · your own oil, jars and current C2 · excludes labour, freight, packaging and GST
Item Need Buy ₹
Wax: Luxury Soy Wax CSI 464 2,484 g (nine × 276 g) 3 × 1 kg (516 g spare) ₹1,522.20
Fragrance: your oil 216 g (nine × 24 g) From stock your own
Arm A: C2 pair 6 C2 From stock your own
Arm B: C1 pair 6 C1 Eco C1 20-pack (14 spare) ₹118.00
Arm C: one Cotton Braided 3 Cotton Braided 10-pack (7 spare) ₹120.00
Holders, if you have none 9 Steel Wick Holder, pack of 10 ₹500.00
Total, own holders 3 kg wax + C1 20 + CB 10 ₹1,760.20
Total, with holders + Steel Wick Holder 10 ₹2,260.20

About 10 days with daily sessions (worked example). If your pair is Cotton Braided rather than C2, arm B is a C2 pair (an Eco C2 10-pack, ₹94.40, covers it with four spare) and arm C is your current single Cotton Braided centred; CSI lists no sized, tabbed cotton wick larger than Cotton Braided.

Reading the result

The winning arm is the one that passes the top and the bottom. Not the one that looks best at the top.
Result · what to do
Our judgement · "passes" means all three candles met the rule
Result Meaning Next step
B passes Two smaller works Switch to a C1 pair; re-approve each fragrance on it
B tunnels early, A hot late No CSI step fits between Wider spacing or a higher floor and shorter session on A; or a finer wick from elsewhere
Only C passes One larger works in this jar Use it, with three more candles per fragrance
A passes in still air at the measured spacing The original was spacing, draught or session length Fix holders, label and placement; keep the C2 pair
Nothing passes The jar or formula is the limit Lower load within both ceilings, a higher floor, or a different jar; see the three-wick redesign for wider jars

For wider jars where a pair can't cover the pool and three wicks run hot, the redesign is a large three-wick candle generating too much heat; whether a multi-wick candle should carry a shorter maximum session on its label is maximum burn duration for multi-wick candles.

Don't do this. Don't jump to one large wick because it's simpler; it moves the problem to early tunnelling or a hot centre. Don't mix a C2 and a C1 in one candle to find a half-step; it builds in asymmetry. Don't judge the C1 pair on burn 1 alone: give it to the end of burn 2 to reach the wall, then judge the bottom. Don't change spacing and size at the same time in one arm, or you won't know which worked. Don't touch the glass to check heat. And don't buy 1,000 C1 until three candles pass every third.

The CSI pair ladder, buy list and production

Pair ladder · smallest in-stock pack for a three-candle arm
Per-wick ₹ = pack price ÷ wicks · flat at every pack · Eco C1 10-pack out of stock on 7 October 2026
Current Two smaller Pack and price Per wick Per candle
Cotton Braided pair C2 pair (6 wicks) C2 10 ₹94.40 ₹9.44 ₹18.88
C2 pair C1 pair (6 wicks) C1 20 ₹118.00 ₹5.90 ₹11.80
C1 pair None smaller at CSI Spacing, load, floor, label; ask us — —
Comparison single One Cotton Braided (3) CB 10 ₹120.00 ₹12.00 ₹12.00

Argued against our own interest: if your spent jars show the pair drifted together, holders and a measured spacing may fix it with no new wicks at all; and if the C1 pair passes, you'll spend ₹7.08 less per candle on wicks with us than you do now.

The step to production quantity

Only after three of three, with each fragrance re-approved on the new pair. Worked example, labelled: 110 double-wick candles a month is 224 C1 wicks with a 2% allowance, so 2 × 100 + 2 × 20 = 240 for ₹1,416.00, the same ₹5.90 a wick at any pack; against the C2 pair that's ₹778.80 less a month in wicks. Holders: a pack of 25 Steel Wick Holders (₹1,250.00) holds a 25-candle pour and is reused. Wax: 110 × 276 g = 30,360 g, so 3 × 10 kg + 1 kg of CSI 464 for ₹15,729.40 (flat per gram). Reorder point = daily use × your lead time + safety stock; CSI publishes no lead times, so ask on WhatsApp.

Diwali is 8 November 2026, 32 days from 7 October 2026. Large double-wick candles are popular festive gifts and are often burned in long evening sessions, so settle the pair before the festive run: about 10 days in the worked example. Send wick, holder and wax counts on WhatsApp for stock, dispatch and a GST invoice.
WhatsApp a festive order

What to buy, and what to skip

Four items for the comparison, chosen on page statements, price and stock on 7 October 2026. CSI publishes no heat or burn data for any wick, so nothing is ranked on performance.

1
wick · the two-smaller arm
Eco Candle Wicks — Thin (C1) and Thick (C2)
From a C2 pair, the only smaller CSI pair is two C1s: there is no sized, tabbed wick between them. Two C1 cost ₹11.80 a candle against ₹18.88 for two C2, so if the C1 pair passes you also save ₹7.08 a candle. The page states no tab size, length or jar range in the text we captured, and claims "minimal soot or smoke" (the page's claim). C1 ₹5.90, C2 ₹9.44 a wick at every pack. Limitation: if the C1 pair tunnels in the top third and the C2 pair overheats at the bottom, CSI has no half-step for you; ask us and we'll say plainly if we can't supply one.
Pack Price Per wick Use
Thin (C1) / 10 ₹59.00 ₹5.90 Out of stock on 7 October 2026
Thin (C1) / 20 ₹118.00 ₹5.90 C1-pair arm: 6 used, 14 spare
Thin (C1) / 50 ₹295.00 ₹5.90 same per wick
Thin (C1) / 100 ₹590.00 ₹5.90 production (two, with two 20s)
Thin (C1) / 500 ₹2,950.00 ₹5.90 same per wick
Thin (C1) / 1,000 ₹5,900.00 ₹5.90 same per wick
Thick (C2) / 10 ₹94.40 ₹9.44 your current pair, if you need more
Thick (C2) / 20 ₹188.80 ₹9.44 same per wick
Thick (C2) / 50 ₹472.00 ₹9.44 same per wick
Thick (C2) / 100 ₹944.00 ₹9.44 same per wick
Thick (C2) / 500 ₹4,720.00 ₹9.44 same per wick
Thick (C2) / 1,000 ₹9,440.00 ₹9.44 same per wick
C1 20 ₹118.00: three C1-pair candles. Buy C1 20 — ₹118.00
2
wick · the one-larger arm
Cotton Braided Wicks Ready Made
The fair single-wick comparison. The page says it is "engineered for large-diameter candles exceeding 8 cm" (your 8.3 cm inside qualifies on that wording) and that "Height of the wick is 10.16 cm", plenty for a 6.5 cm fill; "preventing tunneling" is the page's claim, which arm C tests rather than assumes. ₹12.00 a wick at every pack. Argued against our own interest: one wick looks simpler and costs ₹12.00 against ₹11.80 for a C1 pair, but in a wide jar a single wick commonly tunnels early or runs tall and hot in the centre late; buy the 10-pack for the test, not the 100.
Pack Price Per wick Use
Pack of 10 ₹120.00 ₹12.00 arm C: 3 used, 7 spare
Pack of 50 ₹600.00 ₹12.00 same per wick
Pack of 100 ₹1,200.00 ₹12.00 only if arm C wins
Pack of 500 ₹6,000.00 ₹12.00 same per wick
Pack of 1,000 ₹12,000.00 ₹12.00 same per wick
10-pack ₹120.00. Buy 10 — ₹120.00
3
production · holding the pair in place
Steel Wick Holder (Set of 5)
Spacing is half of a double-wick design, and it has to be the same in every candle. The page describes a "3-hole layout" that "fits single, double, or triple wick setups" and "Fits most jar diameters (up to 9 cm wide)", so your 9 cm jar is at the limit of its stated range. The page states no hole spacing, so measure it before you design around it, or ask us. ₹50.00 a holder, flat across packs. Limitation: the holes are in a line; that suits a pair on a diameter, not a triangle of three.
Pack Price Per holder Use
Pack of 5 ₹250.00 ₹50.00 five test candles at a time
Pack of 10 ₹500.00 ₹50.00 all nine test candles
Pack of 25 ₹1,250.00 ₹50.00 a 25-candle production pour
₹50.00 a holder. Buy 10 — ₹500.00
4
wax · nine 300 g candles
Luxury Soy Wax CSI 464 (flakes)
The comparison needs 2,484 g of wax: three 1 kg packs. The page states a pour temperature of 80°C–90°C and a fragrance load "up to 10%", a formulation ceiling; 8% sits inside it. Flat per gram from 1 kg to 10 kg, so buying 5 kg for the test saves nothing. Limitation: test in the wax your double-wick candle actually uses; if that isn't CSI 464, a wax change is a second variable and the result won't transfer cleanly.
Pack Price Per gram Use
500 g ₹260.00 ₹0.52 small top-ups
1 kg ₹507.40 ₹0.51 three for nine candles, 516 g spare
5 kg ₹2,537.00 ₹0.51 same per gram
10 kg ₹5,074.00 ₹0.51 production
Three 1 kg: ₹1,522.20. Buy 1 kg — ₹507.40

Skip for now: wooden wicks as the "one larger" option (CSI sells one width; a pair of them is a different system to test from the top); the Apothecary Glass Candle Jar with Dome Lid (₹212.40 for the 500 g size) unless you're redesigning the jar anyway, since it's about 10 cm and changes every number here; and any 500-pack of wicks before three candles pass every third.

The CSI principle
Keep two flames and make them smaller before you trade them for one big one.
Check spacing, lean and draughts first, then compare your pair, a smaller pair and one centred wick, three candles each, to the floor.
"A pair that's right at the top only needs less fuel at the bottom. One big wick changes the whole candle."
— CandleMakingSuppliesIndia
Why trust this guide

CandleMakingSuppliesIndia sells the wicks, holders and wax named here, not finished candles. This page still tells you that our range has one step below a C2 pair and none between C1 and C2, that the Steel Wick Holder's spacing isn't stated, and that a passing C1 pair costs you less with us than your current pair.

Every CSI price was checked on the live store on 7 October 2026, with stock checked per pack: the Eco C1 10-pack is out of stock and is not used. Page wording is quoted and attributed, including Cotton Braided's "exceeding 8 cm" and "10.16 cm", the Steel Wick Holder's "up to 9 cm wide" and the Eco wick page's "minimal soot or smoke" claim.

The 9 cm jar, 0.35 cm walls, 4.2 cm spacing, 6.5 cm fill, 10.0 g an hour, 110 candles a month and a 2% allowance are labelled worked examples or our judgement; the option table shows tendencies, not CSI results. For bulk pricing, GST invoicing, and MSDS and IFRA documentation on request, message us on WhatsApp at +91 7397976926.

Frequently asked questions

Why does my double-wick candle get too hot near the bottom?
Heat builds in the glass and the pool as the candle burns down, and two flames add heat to the same jar. Wicks that drifted together, draughts and long last sessions make it worse.
Is one big wick better than two small wicks in a wide jar?
Usually not. One wick in the centre commonly tunnels early or runs tall and hot late. Two smaller wicks keep coverage with less heat; test both to the floor.
What is smaller than two C2 wicks at CSI?
Two C1 wicks. CSI has no sized, tabbed wick between C1 and C2. A C1 pair costs ₹11.80 a candle against ₹18.88 for a C2 pair.
How far apart should two wicks be in a candle?
A common starting point is each wick about halfway between the centre and the wall, then test. In a jar 8.3 cm inside that's about 4.15 cm apart.
Can I use one C2 and one C1 in the same candle?
We wouldn't: a mixed pair melts and heats unevenly. Test a matched smaller pair, adjust spacing, or ask about finer wick steps.
How many candles should I burn to compare double-wick options?
At least three per option, burned to a 1 cm floor in 4-hour sessions, judged top, middle and bottom. Nine candles for a pair, a smaller pair and one large wick.
Two smaller or one larger
Check spacing first, then burn your pair, a smaller pair and one centred wick to the floor, three candles each.
The comparison costs ₹1,760.20 for nine 300 g candles with your own holders, or ₹2,260.20 with a pack of ten Steel Wick Holders. If no CSI pair fits, we'll say so on WhatsApp.
Shop Eco Candle Wicks Check stock on WhatsApp
Continue the read — late-burn heat and multi-wick candles
Editorial standards & sources
About this guide: part of CSI's cluster on late-burn heat, end of life and full-life testing (6961–6980). It answers whether a double-wick candle that overheats late should be tested with two smaller wicks or one large wick: why late heat builds in a pair, causes ranked, the options over the whole candle, a three-arm full-life comparison with an approval rule, and the CSI pair ladder.

Customer reviews: The six reviews at the top of this page are genuine, published Judge.me reviews left by CSI customers on the product pages named on each card — Bamboo Wick Holder, Eco Candle Wicks, Lavender Fragrance Oil, Luxury Soy Wax CSI 464 (Flakes Form) For Container Candles. They are general product reviews, not assessments of the burn and wick advice on this page. Names, star ratings, dates and products are as recorded by Judge.me and wording is unedited. "Verified buyer" appears only on reviews Judge.me recorded as verified — Priyanka Purohit, Tina Raha, Monika Deep, Thenirvaofficial. The reviews from Lalitha Jagan, Ashwini are published but not recorded as verified, and carry no badge. Reviews below five stars are included as published, not filtered out.

Figures verified 7 October 2026, CSI live pricing: Eco Candle Wicks Thin (C1) 10 ₹59.00 (out of stock), 20 ₹118.00, 50 ₹295.00, 100 ₹590.00, 500 ₹2,950.00, 1,000 ₹5,900.00 (₹5.90 a wick); Thick (C2) 10 ₹94.40, 20 ₹188.80, 50 ₹472.00, 100 ₹944.00, 500 ₹4,720.00, 1,000 ₹9,440.00 (₹9.44 a wick); Cotton Braided Wicks Ready Made 10 ₹120.00, 50 ₹600.00, 100 ₹1,200.00, 500 ₹6,000.00, 1,000 ₹12,000.00 (₹12.00 a wick); Steel Wick Holder 5 ₹250.00, 10 ₹500.00, 25 ₹1,250.00 (₹50.00 each); Luxury Soy Wax CSI 464 500 g ₹260.00, 1 kg ₹507.40, 5 kg ₹2,537.00, 10 kg ₹5,074.00; Candle Care Stickers Roll 500 ₹413.00; Apothecary Glass Candle Jar with Dome Lid 500 g ₹212.40. Every item priced here is in stock on 7 October 2026 except where marked. CSI lists no non-contact thermometer and no 9 cm jar.

Non-price figures: the 300 g candle at 8% (24 g oil + 276 g wax, total-weight basis) in a 9 cm jar is a labelled worked example for a jar above 8 cm. 0.35 cm walls (8.3 cm inside, 54.11 cm², 27.05 cm² per wick), 4.2 cm spacing, 6.5 cm fill (46 g per cm), 10.0 g/h, 110 candles a month and a 2% allowance are labelled worked examples; the halfway spacing is a common starting point, not a rule. Pool and flame behaviour by option are tendencies, not CSI data. CSI 464's ceiling (up to 10%) is a formulation limit; 8% is inside it. No glass-temperature limit is given or implied. Diwali 8 November 2026 is a calendar fact.
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