Hero
Fish Fanatic
- Joined
- Oct 5, 2007
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I have 4 african cichlids currently in a 20gl tank that I'm attempting to cycle. 3-4 days without the UV light being on and I finally have a nitrite reading of .25. My question is about a substance that has built up on all 4 walls of the tank. When I look from the side it looks like algea buildup. What could I add to the tank to take care of this problem and what caused it in the first place?