Hi Holly, Well you are the first I've come across that has used this container! I don't think many do. I had purchased some candles from Je T'aime and fell in love with the container (and her candles, great sig. scents and great cold and hot throw) I'm almost certain that she uses something other than C3 not sure what though being that I am only familiar with C3. I thought I would start out with the 10 oz. and when I got that down to a science I would move up to the 18 oz. I haven't had too much of a problem getting a full melt pool, my problem is not so good scent throw. I've only been testing the eco wicks, I have used 2 4's, 2 6's and 2 8's. the 6's seem to be best for full melt pool, but not the scent throw I would like and that's based on using different FO's at 6% per lb of soy. This wick thing is rather confusing! So I am on to the HTP's and if they don't work then to CD's I suppose. Tell, me were you getting a decent throw even though it took awhile to get the full melt pool? Kelsey