AMMO ROCKS 10 LB 

Ammo Rocks 10 Lb	Product Code: AQP149B Price: Check Latest The perfect biological filter substrate made from 100% Zeolite. Natural ion-exchange resins trap the toxic ammonia on the surface of the Ammo-Rocks. The growth of nitrifying bacteria is stimulated by the high surface area concentration of ammonia. The nitrifying bacteria grow faster and produce larger and more active colonies in the filter. 10-LBS