I have a Rena xp-2 canister, marineland HOB
, and a HOB
whisper sitting in the garage because my AC
110 has put them out of work. When I do my bi-weekly water changes I can gauge my water level in the filter by when to clean it. Also keep in mind, I do not use all AC
filter media products so if you have your sponge, a bag of biowhatever, and 15lbs of carbon, it's not going to be able to cycle the GPH
the pump is rated at without the water going somewhere.