I had my tank for about 3 weeks...I have a full load of fishes in a 55 gallon tank....I put bio spira in 3 days ago and it dropped my ammonia and nitrites from how I had it before...My water tests is this .25 ammonia, 0 nitirites and 12.5 nitrates...The ammonia was that level for 3 days...Should I do a water change to get that small amount of ammonia down or do you think the cycling, will bring it down by itself?
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