Definition: Bioball is a small plastic ball, available in various designs, used for colonization by nitrifying bacteria in a biological filtration system.
bioball
By Shirlie Sharpe, About.com
Suggested Reading
Explore Freshwater Aquariums
Must Reads
About.com Special Features
Home Allergy Center
Banish mess, reduce allergens, and maintain a clean, healthy home. More >
Home Improvements Made Easy
Inspirational ideas and expert tips to help you pull off your next DIY project. More >
©2009 About.com, a part of The New York Times Company.
All rights reserved.