Coral Sand Gp-04 Sunsun 2.5Kg Canister Filter Media

SunSun GP-04 Coral Sand Aquarium External Filter 500ml * 5 Boxes

Coarse coral sandis well suited as a hardness buffering filter medium and is used both in pond and aquarium filters, as well as in lime reactors as a filling material. 

The large internal surface with capillary action in coral sand makes that this filter medium is considered one of the best and most efficient biofilter materials for medium-sized and large pond filter systems. The growing buffer effect provides additionally the stability of the water equivalent.

Coral sand consists of pure calcium carbonate with all natural microelements.