08-06-2008, 01:10 AM
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Re: ammonia sources / aquarium chemistry
Originally Posted by beetlebz
what different sources (gravel is vaccumed frequently) could cause a spike in all 3 readings?
Any increased pollution caused e.g. by rotting fish. What happens if ammonia levels increase? Well, ammonia-feeding bacteria colonies grow, but not fast enough to keep the levels at 0. Nitrite-feeding bacteria populations grow much slower than the ammonia feeders, and that's where the .25 come from (notice that the increase is much smaller than the ammonia - the .25 nitrite reflects the increase in ammonia feeders). Nitrate builds up over time, so no miracle here either.
I would, btw, do one or two big water changes rather than many small ones.