>>I've poured quite a few EZ soy candles now with just fo...no color yet. I'm using a 8oz jj (decorative ones with the fruit shapes embeded in the jar..not sure how to explain). They are 2.5 or 2.75" at the widest, I can't remember exactly. I've used Eco 6, 8, 10, and 12 and can't get a full melt pool with any of them.<< I make the 8 oz jellies using EZSoy, ECO wicks, and color blocks. I like a strong candle, so I use 1 1/2 oz. of fragrance oil per lb. I love the Eco wicks and have excellent luck with them. Most of my scents require an Eco 10 (a couple I use Eco 8s with). I find the ECOs throw beautifully, and I love how you can just pinch off the wick with your fingers and it breaks off at just the right spot (no scissors needed). They do mushroom a bit on the heavier scents, but it's worth it to me to get that great throw. I've thought of trying CD wicks (heard a lot of good things about them with EZSoy), but not sure I want to start over and test, test, test, when my ECOs have been good to me . How much FO are you using? Most people who use the standard 1 oz. per lb. use an ECO 8 with good success. I don't know why you are having problems getting a full melt pool? How long are you letting them burn on the first burn? I believe they are 2 1/2 or 2 3/4" wide... I normally let them burn 3 hours on the first burn and my melt pool is about right. If there's a little hangup, most of the time it will catch up on later burns. The only problem I've ever had is with Lilac FO - I had to cut back to 1 oz. per lb with that scent and I still use an ECO 10. HTH! Liz D.