07-16-2014, 03:46 AM
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Can too many water changes hurt a cycle?
After a week I'm now on step 2 of my aquarium cycle in my 20 gallon.
Ammonia is at 0 as of yesterday and still yet today it's zip. I'm doing daily water changes of 50-60%.
Nitrite today was quite high, 2.0ppm and Nitrate was at 40ppm.
I did my water change of 60% and tested again about an hour later.
Nitrite 0.25ppm and Nitrate 10ppm.
Which is obviously better, but still high. Would I hurt it any by doing another 50% water change tonight to try and lower it any more or would taking too much out like that disrupt the cycle?