Here are the results of the testing I did on that particular jar. Wax: EcoSoya CB Advanced, no additives FO: 1 oz pp of wax (4 different types, light to heavy) Dye: 1 drop liquid dye (Bitter Creek brand) pp of wax Jar: Fairway Elevation 8 oz & 16 oz Wicks tried that failed: RRD55 - flame height too small; never reached full melt pool; large amt. of hangup. LX 20, 24, 28 - flame height too small on the 20 & 24, too big on the 28; never reached full melt pool; large amt. of hangup, mushroomed like crazy. HTP 126 - flame height too small; never reached full melt pool; large amt. of hangup. The winners: HTP 1212 - perfect fit for the light FO's. Great melt pool, no mushrooming and no hangup. However, this wick did fail on the heavier FO's with hangup and small meltpool. HTP 1312 - works beautifully on the heavier FO's. Perfect melt pool, no mushrooming and no hangup. This wick could be used in the lighter FO's but I am picky about flame height. IMO, the flame was too tall in unscented or light FO situations. Kimberly