Repti Clear 2 Fine Foam F350Replacement Fine Foams for Repti Clear F350 2 Fine Foams for the Repti Clear F350 (PT3620) Terrarium Filter. Instructions 1. Unplug the filter and remove it from the installation. 2. Separate the filter case (C) from the motor housing (A). 3. Remove the foam cartridge (B) from the filter case (C). 4. Remove the foam pad (B1) from the foam cartridge (B) and replace with new foam pad. 5. Replace foam cartridge (B) in filter case (C). 6. Re attach the