Reygan2
Aquarium Advice Addict
I did a fishless cycle on my last build and as expected nitrate levels were through the roof when it was finished. I did the big water changes until levels were safe for fish. Things were moving smoothly until one of my fish became ill. I checked parameters first thing and nitrates were at 20ish, which isn't bad in my opinion, but I went ahead and did a water change. I ended up treating the tank with prazipro, metro and epsom salt at various stages. None of the meds are supposed to harm BB, but when I tested nitrates the other day I could not get a reading. I tested several times and the results were zero. I planted the tank during the cycle, and I realize that plants absorb nitrates, but to have zero readings seems odd. I'm dosing KNO3 because zero nitrate levels can cause issues. Could it be that I've killed my BB treating the fish?