Yesterday was my first session of bullet casting. I was quite pleased with the results. I did have one question. I am using a Lee Pro 4-20 furnace to melt my lead with. It was about half full of melted alloy. How much of the Marvelux should I add to the alloy to flux it? I noticed what looked like globs formed on top of the alloy after a time. I assume this was some of the alloys in the mix or am I wrong.I would appreciate any input.