9 - 4 = ?
Input the result from the expression
Maximum attempts you can try: 10
Re: cycling 2 freshwater tanks
Subject: Re: cycling 2 freshwater tanks
by Fishlady on 2019/3/7 19:35:43
Once ammonia is going down to 0 in 24 hours it usually takes another 2-3 weeks for nitrite to do the same.