I started at 10:30 this day and it still is not all melted. Now I know why the say to leave it on 24/7. But it was almost there, so I added another 5 lbs. to each. So I have 25 lbs in each vat. I am hoping to start making candle on Tuesday. Wish me luck. By the way, the vat that I have took 47 gallons of water. WOW.