Black Poret foam used for HMF`s. The water polisher 45ppi sits behind the20ppi all rounder.
How to move the water from behind the HMF sheet.
In most situations we recommend the use of an air pump connected to an uplift. As the air moves up the pipe it pulls water with it. In fact its very effective for moving water around. We always try to make any aquarium as air tight as possible with tight fitting glass lids. This prevents water moisture from getting in your house. If this is the case we need to make sure that we are introducing new fresh air for which the air driven system is excellent. You can alsouse a water pump or a canister filter to drive an HMF.
