Originally Posted by Mebbid
I've had the same growth on some of my tanks. I could never really see any difference it made in any of my tanks aside from the cosmetic difference. It usually goes away in a few weeks on its own or you can always scrape it off. I never did figure out exactly what it is though.
Yeah it's really making me suspicious because on Friday my ammonia was at about 2.5-3 ppm
and now today it's at 4! This fishless cycle is pissing me off. Something inside my tank is adding ammonia but nothing is live in my tank!