NEPHELINE SYENITE
Filter Sand for all types of sand filters #20 silica sand (0.45mm - 0.55mm) - 50 lb Bag. 3 bags for 18" filter, 4bags for 22'" filter, 6 bags for 24" filter.
DR DRYDEN'S ACTIVATE
Activate is a permanent filter media that replaces sand, zeolite or crushed glass. It is a sustainable solution for crystal clear water.
