so currently my fish are all in a QT and my nitrate and nitrite levels are super high. I tried to do a 25% water change and it didn’t pull the levels down. I have 9 fish in a QT right now trying to cure for ich.
My question is how much water can I change? Can I do a 100% water change or is this a bad idea?
My question is how much water can I change? Can I do a 100% water change or is this a bad idea?