Just wondering....What level does everyone keep their nitrates. Mine are less than 20ppm with a 40% weekly water change. I was wondering if I could stretch to two weeks if they stay under 40ppm? Any opinions?
I try to keep mine below 40 ppm. If yours is staying at 20ppm with weekly water changes, you should be able to stretch the changes to two weeks. Give it a try and test it.
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