Fluval Canister Filter Manual

The intake stem may be positioned anywhere in the tank. Preferably this will be in a location that is easily disguised by assorted decorations. The most usual placement is on the back wall of the aquarium. The intake stem draws water and debris near the aquarium’s bottom into the filter unit by siphoning.

Water flows down the outside of the interlocked modules until it reaches the bottom of the filter case. It then enters the grid of the lowest module. The pump unit draws all water with its debris upwards through all three filter modules. Filter media removes particles and liquid impurities and can be used to change the chemical characteristics of the water, depending on the aquarists’ needs. The water brings oxygen into the filter, feeding the needs of the beneficial bacteria, which make up a biological filter.

Purified water enters the impeller well to be pumped back to the aquarium. The return spray bar forces the water into several small streams. These agitate the surface as they enter the water. The spray produces currents to ensure no stagnant or “dead spots” are found in the tank.