The white bio-cubes are ultra-high surface area filter media, perfect for pond bio-filters. They are cut from fish-safe, coarse, white, aquatic filter media.

Much lighter weight (about 1 lb. per cu. ft.) than lava rock (over 50 lbs. per cu. ft.). The bio-cubes are much more effective, and much easier to clean!

The filter cubes are a great upgrade for any brand of waterfall or biofilter tank, including Aquascape, Atlantic, EasyPro and Savio. They provide years of effective mechanical and biological filtration.

Each cu. ft. of bio-cubes cover about 525 sq. ft. of surface area, much more than lava rock, bio-balls or ribbon material. The bio-cubes allow your pond filter to maintain greater levels of beneficial bacteria for clearer water and gives your pond a better ability to handle a larger fish load.

A free mesh bag ($6.99 value) is included to hold the bio-cubes.

Please Note: Bag color may vary. Bio-cubes ship compressed to reduce costs.