Bio Balls Media 1 Gallon

Optimize biological filtration in your aquarium system. Versatile, space-saving Bio-Balls efficiently process more harmful organic materials. The secret is their unique, geometric design that dramatically increases surface area to cultivate more beneficial bacteria. One gallon of Bio-Balls has a surface area of approximately 21-1/2 square feet. Safely maintain larger biological loads even in aquariums with relatively smaller filter areas. Place in wet/dry filters to improve biological filtration.
Each Bio-Ball measures approximately 1 inch - 225 counts per gallon.