If you're using soy it takes a larger wick for the same size candle made in pw, sometimes 2 sizes bigger, or more depending on your fo. You will need to experiment with your wick sizes as some makes of wick have more than one choice for the same size candle. Initially try testing one size candle/container style at a time as it can easily get confusing, then when you're satisfied with the results move on to the next. Before long it will get easier. Do keep lots of notes as Scented says & above all enjoy the ride. Sally.