Atlantic's BB1500 contains 150 extremely durable, lightweight Bio-Balls that are easy to clean and reduce channeling

Each ball is 1.5" in diameter and has nearly 25 square inches of surface area for bacterial colonization

Use one box per Media Bag (BG2234)

Atlantic's BB1500 contains 150 extremely durable, lightweight Bio-Balls that are easy to clean and reduce channeling. Each ball is 1.5" in diameter and has nearly 25 square inches of surface area for bacterial colonization. Use one box per Media Bag (BG2234). Bio-Balls have a 5-year warranty.