Wave-point Aquarium 1.25" Bio Balls Wet/Dry Filter Media for Tank Pond Reef Biofilter 50-900 pcs (2000 pcs (Bulk) Approx. 2.14 cu. ft)

Ideal for use in freshwater and saltwater wet/dry systems. Bio balls do not require replacement unless it’s damaged or destroyed. More surface area for growth of beneficial bio-spira bacteria. Bio Ball Dimension: 1.25″ (32mm) diameter approx. Approx. 0.45 gallon per bag (50 bio balls) or 2.5 gallon per bag (300 bio balls). Free EXTRA COARSE reusable media bag for easy handling and allow water to flow freely through the bag to maximize filtration. Includes: 50 or 300 Bio Balls in each media bag. Media mesh bag size: 8.0″ x 5.5″ or 19.3×13 inch (approx.) In the event of excessive buildup, you may gently rinse with water from an established aquarium.