02-06-2008, 08:27 PM
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Yep, if nitrates are still high, do about a 25% water change, wait a few days and then test again. If it's still high the next time, you can do another water change, about 10 - 20% every few days until its under control.
And you're very right about waiting... that makes all the difference in the world. In waiting you will manage to avoid bring home fish that are only going to get sick and possibly die before you're done with the cycle.... or avoid buying fish you don't really want or can't stay there later. Quite often I've seen people run to the store and quick buy a few damsels to cycle their tank, then to find out that damsels won't work with the fish they really want, or that the damsels will get too big for their tank. Blue damsels in a 30 gallon, you might get 3 in there, but that would be a full tank of fish, plus they're quite aggressive, making it difficult to mix anything with them in a smaller tank. (domino damsels grow to 6 inches, and are very very aggressive, especially once they mature... same applies to most damsels)