There are2 types of nitrifying bacteria. The first type eats ammonia and poops nitrites. The second eats nitrites and poops nitrates. You got the first, now you have to wait for these ones to build up.
Once your BB can reduce 4 ppm
ammonia into nitrates in 24 hrs your done. Then you do the big water change.
Keep your lights out until then or you may see an algae outbreak.
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