a question about fish-in cycling. - Page 2 - Tropical Fish Keeping - Aquarium fish care and resources
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post #11 of 12 Old 12-19-2010, 12:31 AM
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Originally Posted by mikeyfishes View Post
i thought every other day water changes were okay, would more frequent changes be necessary? my last amm # was between 0 +.25[ sometimes hard to say]?
I did a water change every day - if I had a reading, I changed the water (and until the tank has cycled, you'll have a reading). At 0.25, every other day may be ok not to kill your fish overnight, but when it increases to 0.5 or higher (I said 0.1 before, I must have meant 1.0....) I'd definitely increase the water changes to daily (or more, if you get higher readings). The way I looked at it was that the lower I kept it by water changes, the less risk of it spiking to a level that would kill the fish. I figured "start low + increase" would always be lower than "start higher + increase". It's your decision how you want to approach it.

You'll know that the tank has cycled when you get 0 for ammonia and nitrite and a reading for nitrates.
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post #12 of 12 Old 12-19-2010, 11:49 AM
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Originally Posted by mikeyfishes View Post
jeaniel , you have an awesome group of fish, and am very grateful for your advice, and any more would be more than n welcome
Thanks for the kind comment.

Tanker pretty much covered your question I think. But yeah, you'll see ammonia rise, then fall to 0, then nitrites will rise, then fall to 0, then you'll get a reading for nitrates. When your readings stay at 0 for ammonia and nitrites and you have some reading for nitrates then your tank has finished cycling. The complete cycling process could take anywhere from around 4-8 weeks. Once your tank is cycled weekly water changes (generally around 20-50% depending upon your fish load) to keep nitrates under 20ppm are recommended.

Good luck and feel free to ask anymore questions.

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