I’m Using a 7.5 cm Jar with 10% Rose Fragrance and the Melt Pool Becomes Very Deep — Should I Reduce Fragrance Load or Wick Size First?
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When is wick-first right? When the flame runs above about 5 cm, mushrooms, reaches a full pool very fast, or the jar looks hot. Then pour six candles at 10%: three on your current wick, three one rung down.
When is load-first right? When the flame looks normal and you already doubt 10%: oil on the surface, a planned price cut, or the unstated basis of the wax's "up to 10%". Then pour six on your current wick: three at 10%, three at 8%.
Is 10% allowed? It is the top of British Rose's stated soy range and of CSI 464's "up to 10%". If that 10% means of wax weight, 10% of total (11.11% of wax) is over it; 9% of total satisfies both readings.
- Straight answer: load or wick first?
- Before either route: is the pool really too deep?
- Two routes, one change each
- The routes costed in candles, rupees and days
- Which route answers more: four possible worlds
- 10% is the ceiling, not a target
- The order we would run it, step by step
- What each route needs
- Frequently asked questions
Before either route: is the pool really too deep?
Many makers use about 0.5–1 cm as a practical depth target (a rule of thumb, not CSI data). A pool that reaches 1.5–2 cm is deeper than that, but depth depends on when and where you measured it: at 4 hours rather than 3, next to the wick rather than near the wall, in the last third of the jar rather than near the top. How to read depth properly, with a marked skewer at each hour of a session and the combined heat rule, is the 1 cm-deep-at-four-hours post; depth that only grows low in the jar is the deep-pool-near-the-bottom post. This page assumes you have done that and the answer is still "too deep".
| Check | If it is the cause | Then |
|---|---|---|
| Session length | Deep only after 4+ hours; normal at 3 | A label and instruction question, not a formulation one |
| Where you dipped | Deep beside the wick, normal near the wall | Re-measure the way 4226 describes before deciding |
| Trim and draught | Flame tall only when untrimmed or near a fan | Trim to about 5–6 mm and burn in still air, then re-measure |
| How you weighed the oil | "10%" was added to the wax weight, not the total | Your real load is 9.09% of total, a little under 10%; it does not explain a deep pool, but record it |
| Jar inside diameter | 7.5 cm is the outside; the inside is about 6.8 cm | A narrower pool than you think; wick-first becomes more likely (see the 7.5 cm hub) |
If the free checks clear, write down three signals from your current candle: trimmed flame height at 1 hour, whether the wick mushrooms, and how long the first full pool took. Those three decide the route. CSI has no in-stock 7.5 cm jar, so the worked example uses your own jar, measured at 44.18 cm² of pool if 7.5 cm is the inside.
Two routes, one change each
Both routes hold everything else fixed: CSI 464 from one bag, one jar batch, 150 g fill, pour temperature (the wax page states 80–90°C; follow your own jar's heat wording, pour at the low end and pre-warm clean jars; judgement), the same cure and the same room. Both use three candles per cell, because a depth reading from one candle can be a pour or centring accident.
| Route L · load first | Route W · wick first | |
|---|---|---|
| Control cell | 3 × current wick (C2) at 10%: 15 g oil + 135 g wax | 3 × current wick (C2) at 10%: 15 g + 135 g |
| Test cell | 3 × C2 at 8%: 12 g + 138 g | 3 × C1 at 10%: 15 g + 135 g |
| The one change | 3 g less oil per candle | One rung smaller wick |
| What it can prove | Whether the load contributes to depth on this wick | Whether the wick's heat is the cause, at the load you sell |
| What it cannot prove | Whether a smaller wick would be better at either load | Whether 8% would have been fine on the current wick |
| Product change if it wins | An 8% rose: ₹9.20 less oil per candle at 1 kg prices | A 10% rose on C1: ₹3.54 less per candle in wick |
Why not run both changes as a 2 × 2 (10% and 8%, each on C2 and C1)? You can, and the 2 × 2 load and wick test lays it out; it costs more candles and answers more at once. This page is for the maker who wants to spend one round and choose it well. The large-jar version of the same idea, where a sequential plan beats a factorial one because every candle is expensive, is the 10 cm double-wick sequence.
The routes costed in candles, rupees and days
| Line | Route L · load first | Route W · wick first |
|---|---|---|
| Candles | 6 | 6 |
| British Rose | 81 g = ₹277.18 (19 g left of 100 g) | 90 g = ₹307.98 (10 g left of 100 g) |
| CSI 464 | 819 g = ₹415.56 | 810 g = ₹410.99 |
| Wicks | 6 × C2 = ₹56.64 | 3 × C2 + 3 × C1 = ₹46.02 |
| Materials consumed | ₹749.38 | ₹764.99 |
| Days to a first answer | about 11: pour, 7-day cure, 3 burn days | about 11 |
| If a second round is needed | about 22 days; ₹1,514.38 for both rounds | about 22 days; the same ₹1,514.38 |
Route W costs ₹15.61 more in round 1, from the extra 9 g of oil, less the cheaper C1 wicks. That difference is noise. The real cost is a second round: another 11 days, and money you did not need to spend. From nothing but your jars and C2 wicks, wick-first's cash outlay is ₹967.60. The seven-day cure and three burn days are our judgement: British Rose's page states no cure time in the text we captured, while 25 of CSI's 102 oil pages that do state one say 48–72 hours for soy, and many makers wait about a week. Costs exclude labour, freight, packaging, jars and GST.
Which route answers more: four possible worlds
| World | Signals that often go with it | Route L shows | Route W shows | Rounds to an answer |
|---|---|---|---|---|
| 1 · The wick is too hot for this jar | Flame above about 5 cm, mushrooming, full pool well inside the rough 3.0 h, hot-looking glass | Little change at 8% | C1 shallower and still reaches the glass | W: 1 · L: 2 |
| 2 · 10% tips a borderline wick | Flame in range; depth creeping up; oil on the surface; loads near the ceiling | 8% noticeably shallower | C1 shallower but tunnels | L: 1 · W: 2 |
| 3 · Both | Heat signals and oil on the surface | Partly shallower | Partly shallower | Either: 2, or run both at once |
| 4 · Neither | No signals; depth only after long sessions | No change | No change | The free checks, not a test |
In our judgement world 1 is the likelier explanation for a pool that is very deep rather than slightly deep, because depth follows heat and the wick sets the heat. That is why the default on this page is wick-first. World 2 is real, but the evidence that a lower load makes a pool shallower is weaker than the evidence that a smaller wick does; it is a tendency some makers report, and CSI has no data on it. So load-first earns the first round only when the flame gives no heat signals and you had other reasons to question 10%.
10% is the ceiling, not a target
British Rose's page says "candles (up to 10% soy, up to 6% paraffin)"; CSI 464's page says "Fragrance Load Up to 10%". Two ceilings, both at 10%, and the lower governs. These are formulation limits, not regulatory ones, and the maximum is not the best-performing load. The wax page does not say whether 10% means of total candle weight or of wax weight. CSI's convention is total weight, but the conservative reading is of wax weight:
| Load, % of total weight | Same load, % of wax weight | Oil in a 150 g candle | Within a 10% ceiling read as… |
|---|---|---|---|
| 10% | 11.11% | 15 g | total: yes (at it) · wax: no |
| 9% | 9.89% | 14 g | both readings |
| 8% | 8.70% | 12 g | both readings |
So there is a formulation argument for testing below 10% that has nothing to do with the deep pool: at 10% of total you are over the wax ceiling on the cautious reading. If you run route L, run it with 8% or 9% as the test cell; if you run route W, consider running both of its cells at 9% (14 g per candle) so whichever wick wins is approved at a load that satisfies both readings. Per candle at 1 kg prices, British Rose costs ₹46.02 at 10%, ₹41.42 at 9% and ₹36.82 at 8%; 10% to 8% saves ₹920.40 on 100 candles.
The order we would run it, step by step
What each route needs
Four items, chosen on page statements, price and stock on 29 September 2026. CSI publishes no wick-performance data, so nothing here is ranked on burn results. Candle counts use 150 g: 12 g of oil at 8%, 15 g at 10%.
| Size | Price | Per gram | 150 g candles at 8% | at 10% |
|---|---|---|---|---|
| 15 g | ₹94.40 | ₹6.29 | 1 | 1 |
| 50 g | ₹212.40 | ₹4.25 | 4 | 3 |
| 100 g | ₹342.20 | ₹3.42 | 8 | 6 |
| 500 g | ₹1,593.00 | ₹3.19 | 41 | 33 |
| 1 kg | ₹3,068.00 | ₹3.07 | 83 | 66 |
| Pack | Price | Per unit | What it covers here |
|---|---|---|---|
| 500 g | ₹260.00 | ₹0.52 per g | three of six candles |
| 1 kg | ₹507.40 | ₹0.51 per g | one route (819 g or 810 g) |
| 5 kg · 10 kg | ₹2,537.00 · ₹5,074.00 | ₹0.51 per g | flat per gram; production only |
| Pack | Price | Per unit | What it covers here |
|---|---|---|---|
| Thin (C1) / 10 | ₹59.00 — Out of stock | ₹5.90 | Out of stock on 29 September 2026 |
| Thin (C1) / 20 | ₹118.00 | ₹5.90 | route W's one-down arm (3), 17 spare |
| Thin (C1) / 50 · 100 · 500 · 1000 | ₹295.00 · ₹590.00 · ₹2,950.00 · ₹5,900.00 | ₹5.90 | production, after full life |
| Thick (C2) / 10 | ₹94.40 | ₹9.44 | the current wick in both routes |
| Thick (C2) / 20 · 50 · 100 · 500 · 1000 | ₹188.80 · ₹472.00 · ₹944.00 · ₹4,720.00 · ₹9,440.00 | ₹9.44 | production |
| Pack | Price | Per unit | What it covers here |
|---|---|---|---|
| Single | ₹354.00 | ₹354.00 | weighs a 3 g load difference per candle, which is the whole of route L |
CandleMakingSuppliesIndia sells the oil, wicks and wax named here, and does not sell finished candles. This page still says that one route ends with you buying less of our rose, that our only rung below C2 may be too small for your jar, and that a higher-ceiling wax is not a shortcut.
Every price was verified on CSI's live store on 29 September 2026. Stock was checked per size: the Eco C1 10-pack is out of stock on that date and is flagged; every other size shown is in stock. British Rose's load wording and CSI 464's ceiling, pour and throw wording are quoted from the product pages; where a page is silent in the text we captured, we say so.
The route rule, the signals, the four worlds, the 7-day cure, the three-burn window and all timings are our judgement or worked examples; depth and flame ranges are commonly cited rules of thumb, not CSI data; CSI publishes no wick-performance data. For bulk pricing, GST invoicing, and MSDS and IFRA documentation on request, message us on WhatsApp at +91 7397976926.
Frequently asked questions
- My 7.5 cm Soy Candle Has a 1 cm Deep Melt Pool After Four Hours — How Do I Determine Whether the Wick Is Generating Too Much Heat?
- I’m Using a 7.5 cm Jar with Soy Wax and 8% Lavender Fragrance — The Candle Tunnels for Two Burns but Eventually Catches Up; Should I Change the Wick?
- My 7.5 cm Jar Works Perfectly with Lavender but the Same Wick Mushrooms Badly with Oud at 10% — Why Does Changing Only the Fragrance Alter the Burn?
- My 7.5 cm Coffee Candle Gives Excellent Hot Throw but Produces Soot After Three Hours — How Do I Keep the Fragrance Performance While Correcting Combustion?
- I’m Using an 8 cm Jar with 10% Coffee Fragrance and My Wick Keeps Mushrooming — Would Reducing Fragrance Load Potentially Improve the Burn?
- My 8 cm Jar Uses a Premium Expensive Fragrance at Only 6% — Should I Start Wick Testing from the Same Size Used for My 8% Fragrances?
- I’m Using a 10 cm Jar with 10% Vanilla Fragrance and Both Wicks Mushroom Heavily — Should I Reduce Wick Size, Fragrance Load or Both in Separate Tests?
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 — British Rose Fragrance Oil, Eco Soy CSI 400, Luxury Soy Wax CSI 464 (Flakes Form) For Container Candles. They are general product reviews, not assessments of the 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 — Arshad Shaikh, Jaya Sawlani, Thenirvaofficial, Arminder Kaur. The reviews from Emma Bechara, 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 29 September 2026, CSI live pricing: British Rose Fragrance Oil 15 g ₹94.40 (₹6.29/g), 50 g ₹212.40 (₹4.25/g), 100 g ₹342.20 (₹3.42/g), 500 g ₹1,593.00 (₹3.19/g), 1 kg ₹3,068.00 (₹3.07/g); Luxury Soy Wax CSI 464 500 g ₹260.00, 1 kg ₹507.40, 5 kg ₹2,537.00, 10 kg ₹5,074.00; Luxury Soy Wax Chunks 1 kg ₹599.00; 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; Thick (C2) 10 ₹94.40, 20 ₹188.80, 50 ₹472.00, 100 ₹944.00, 500 ₹4,720.00, 1,000 ₹9,440.00; Candle Making Weighing Scale ₹354.00. Every other size listed is in stock on 29 September 2026. Per unit = price ÷ grams or units, two decimals.
Non-price figures: load is a percentage of total candle weight (150 g at 10% = 15 g oil + 135 g wax; at 8% = 12 g + 138 g); conversions to % of wax weight are declared. The 7.5 cm inside reading, 150 g fill, C2 starting wick, 7-day cure and three burn days are worked-example choices. Ceilings as the pages state (British Rose up to 10% in soy, CSI 464 up to 10%, pour 80–90°C): formulation limits, not regulatory ones; the wax page does not state its basis. Depth (about 0.5–1 cm), flame (about 2.5–5 cm) and melt-pool times are commonly cited rules of thumb. The route rule, signals and worlds are editorial judgement. Costs exclude labour, freight, packaging, jars and GST. Diwali 8 November 2026 is a calendar fact.