Nitrates will never be at zero without plants. Your test kit is either old or you aren't doing the test right.
You shouldn't ever tamper with your pH unless you know why it is low. This in itself could be hurting your fish quite a bit. They like a stable pH, not one that swings around.
You shouldn't ever tamper with your pH unless you know why it is low. This in itself could be hurting your fish quite a bit. They like a stable pH, not one that swings around.
