Boxtech Aquarium Filter Media, Porous Nano Media Filter Media For Sump Tank, Pond, Fish Tank (30 Pcs)

Hollow Desing – Large Surface AreaHollow design to increase surface area. Effectively improve the cleaning ability adsorption capacity and the number of the beneficial bacteria Honeycomb Shape DesignPorous surface good for bacteria to colonize. Enhance water permeability and adsorption capacity Purify Water Quality Remove Peculiar Smell This powerful item can Removes Ammonia& Nitrites Stabilize PH Value Absorbs Odors/Heavy Metals/Toxins effectively absorbs fish waste and debris providing crystal clear water for fish to thrive thereby enhancing fish immunity 30 PCS Redusable Aquarium Filter MediaIt can be cleaned and reused. Adopt protective packaging safe and not fragile Wide ApplicationPerfect for freshwater aquariums. Like aquarium filter sumps tank and ponds. Crack into pieces to different size up to your needs