03-25-2010, 08:47 PM
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Originally Posted by Ulyaoth
What about if you go from 7 fish to 1 in a 16g? Will the one still support the bacteria enough or will there be a dieoff still so that I'd have to slowly add the fish in again rather than just put them all back? I've been planning to put all the fish in my tank but my betta outside in a tub pond for the summer.
I believe what happens is that the bacteria colony will die off to just the amount needed to support the ammonia source. Since their food supply dwindled so does the colony. So there will be some die off. You'll have to add fish back in slowly to give the bacteria colony time to catch up. Make sense?