Good branded Canister which is equipped  with a pump of high pumping  capacity, which has an excellent feature in that a high water flow rate can be maintained  even when  it  is  subjected  to water  resistance  caused by the filter  media. This feature allows the use of fine grains of biological media as a filter medium; however if a sufficient amount of water is not supplied due to the load applied to the water inlet of the pipe or inflow hose, symptoms such as idle running pump  and air pockets may occur. When it is observed that air is at all  times mixed with water even after the air trapped in the canister is released, it  is advisable to check for the clogged  inflow  port or the  bent  hose.

All Canister Filter should be maintained by rinsing the filter  media basically  once every 2-3 months. Contamination can  be removed from the filter media easily just by putting the filter media in a  tray, filling the tray  with tank water and then removing the filter media from the  tray. This gentle  rinsing  is  sufficient  to clean the filter media since rinsing them too hard can result in loss of the beneficial bacteria on the media surface.

If the water flow from the filter is still too low even after rinsing the filter media, contamination inside the pump is suspected. In this case, open the pump  front casing and clean the interior of the pump or check the impeller with a  tool  such as a  brush following the instructions  and  illustrations  on  the  user manual. All canister filter,  in particular, is prone to a lower flow rate  if  dirt  is accumulated  in  the  impeller grooves. An appropriate flow rate may be restored just by cleaning the impeller.