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.
Koi can be very hard on your plants because of their persistent rooting habits. They will root around looking for insects and larvae to feed on. Any valuable plants should be planted in tubs, which are then placed in the pond.
