Labenator65000
Aquarium Advice FINatic
Yes, I know it is a broad question and depends on a number of variables. But let's just say that a 40-50% PWC weekly keeps my paramaters in check. I have been deep-gravel vacuuming every week as well, but there really has been very little waste in the water. About once per month I totally rearrange the tank so I can completely deep-gravel vacuum the entire tank, including the waste that accumulates under the decor and hiding spots. Should one gravel-vac every time they do a PWC, in general?