10-15-2008, 11:00 PM
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Originally Posted by qpc68
Fishless cycling may be the politically correct way of cycling a tank, but it takes longer and the results are not always gauranteed. If you're looking for the quickest way to cycle a tank, get a couple hardy fish. It will still take a few weeks, but significantly less than fishless. Just stay up on your testing and water changes and the fish should be fine.
I disagree. It's not really a matter of political correctness; using fish to cycle a tank exposes fish to harmful ammonia and nitrite levels, fishless cycling does not. Plus, if you use something like zebra danios to cycle a tank, you either have to keep the danios and sacrifice room in the tank you might want for other fish, or you have to return them to the store. As for returning zebra danios: have fun catching them! They're the fastest fish I've seen.
Also, cycling with fish only builds up enough beneficial bacteria to process the the amount of waste being produced by those fish. Add more fish, and the bacteria have to multiply to account for the increased bioload. If you cycle fishless, you can build up a big enough bacteria colony to handle more fish more quickly.