Just today I noticed this sudden development of strange fuzzy white mold-like stuff in my 3 gallon tank. The tank currently has a ton of plants and a few trumpet snails, no other inhabitants. I've been supplying ammonia to cycle the tank with fish flakes. Parameters (I'm cycling the tank right now): Ammonia - 1.0 Nitrite - .25 Nitrate - 5 Ammonia is higher than the last time I tested (it was .5 yesterday) which leads me to think it might just be rotting flakes, but I wanted to ask in case anyone had any other thoughts. The purple-ish thing in the image is just a small piece of quartz, and the white clump is a piece of cuttlebone. The issue is the fuzzy stuff between them.