API® CRYSTAL is the ultimate filtration medium for crystal clear water. API CRYSTAL contains a superior blend of resins and activated carbon which removes organic aquarium pollutants, including colours, odours, heavy metals and toxic gases as well as other compounds that carbon alone cannot remove. CRYSTAL also removes light blocking impurities for improved growth of corals in saltwater and plants in freshwater aquariums.
Rinse CRYSTAL under cool tap water to remove loose dust. It does not need to rinse clear. Replace every three weeks or sooner if aquarium is heavily stocked and/or colours or odours are detected.
When and how should I use API CRYSTAL BIO-CHEM ZORB™ filters?
Use this product to clean and clear dissolved organics from your aquarium water, such as colours, odours, and other pollutants. This product fits easily into filters, and is for use in freshwater, saltwater, and reef aquariums. Use when starting or maintaining an aquarium, or if pollutants are detected.
How often do these API CRYSTAL BIO-CHEM ZORB™ filtration cartridges need to be changed out with just one fish?
We recommend changing API CRYSTAL BIO-CHEM ZORB filtration cartridges once a month, but if your tank is clear, you can wait longer.