OK. Pyro P just sank right to bottom and began to dissolve. Within a few minutes the granular appearance transformed to a melted appearance. I shook the container, its just a slurry.

The 3fg Goex. A whole different story, at least in the beginning. The powder just pretty much floated. I think some went below but even 15 minutes later (right now) the majority is still floating. A thin layer of graphite has skinned the surface. The graphite seems to be acting as a water repellent keeping the powder "dry" so to speak. I'll tell you guys what it looks like in the morning.