ReefPure PHOSaR HC Recently Warner Marine Research has released PHOSaR HC, a completely new product utilizing a new and unique Iron based media. PHOSaR HC is denser, harder, less dusty and more durable. In addition, PHOSaR HC adsorbs up to 50% more Phosphates, Silicates and Arsenic compared to other similar products. The high capacity also allows PHOSaR HC to be used up to 12 weeks at full performance with no release back into the aquarium water. PHOSaR HC is a high density granule, approximately 2-4mm in size. It works best in a media reactor or a canister filter. PHOSaR HC also requires low to moderate water flow to function correctly although in a media reactor a slightly higher flow is possible. PHOSaR HC should be rinsed well with purified fresh water until the rinse water is clear. PHOSaR HC will last up to 12 weeks in an aquarium with low Phosphate levels. Use 50% less PHOSaR HC compared to other competing products. If you currently need 4 inches of media in your media reactor you can use 2 inches of PHOSaR HC for similar adsorption capacity plus it will last much longer.