This is in my QT. There's a few trochus snails in there, but that's about it. This stuff is coming on heavy. It's a deep reddish-brownish color. Kinda looks like dinos, but no bubbles. I expected diatoms, but I barely see any through my scope. These giant circle egg-looking things are surprisingly all over and in large numbers. Given the lack of CuC in the tank, I'm confused as to what would be producing eggs in this quantity (so maybe they aren't eggs at all?).