So this tank has been a pain from day 1. First all the plants were rottingthe bottom halves off, now the gravel has stuff on it. I was cycling the tank, finally got normal readings a couple days ago. But I looked at it just now and there's this brown, almost rusty looking stuff everywhere. A big patch on the gravel in the front of the tank, some spots on the glass above it, it's growing on my bubbler. It kinda looks like the plants did when they were rotting, could that be it? Is it brown algae? Will it kill my fish if I put them in? There's also some white deposits on the outside of my filter and along the lid around it. Dunno if that's related.