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Brent8919
I am actually interested in when to start it; the manual says to wait 4 weeks in a new aquarium, but I understand that applies if you are starting a sterile setup. In my case, I have 35 kg of substrate and about 150 liters of live water in a total volume of 450 liters. The NO2 level is around 0.01, which is after starting it a week ago. Thank you.