- Great for Freshwater, Saltwater or Pond Applications.
- Great for use in a Wet-Dry filter systems. 
- Can also be used in other filters that have an area for biological media.

The Coralife Bio-Balls 250 Count by Energy Savers Unlimited enable aquarists to maintain large biological loads in much smaller filter areas. The dramatic increase in surface area is achieved by the unique, geometric design of the smaller, one-inch bio-ball.

One gallon of Coralife Bio-Balls, (approximately 225 balls) has a surface area of approximately 21.5 square feet. This increased surface area supports between 45 and 60 gallons of marine life.