Things You'll Need
- Filter-cleaning brush
- Water
- SmartFilter cartridge
- Small cup
Instructions
Unplug the RENA SmartFilter system.
Remove the top cover of the filter by twisting the knobs located on the top.
Remove the filter cartridge from the filter housing. Dispose of the cartridge.
Pour a small amount of water from the fish tank into the filter housing, using a small cup.
Scrub the internal walls of the filter housing with a small filter brush. Filter brushes can be purchased online or at any pet store that sells fish supplies.
Inset a new RENA SmartFilter cartridge into the cartridge holder of the filter housing.
Plug in the filter system.