GFO HC - High Capacity Bayoxide E33HC Phosphate Remover - for Fish Tanks, Aquariums & Ponds, 700g (32oz Jar, 1.54lb), by Kolar Labs;

This is the Original GFO HC High Capacity Granules. The same as you are used to, specially processed with reduced fines and ultra high purity. Kolar Filtration is the exclusive distributor for Lanxess BAYOXIDE® E33 HC for the aquatics industry in North America, so you can be sure you are getting the real, high quality product you need. High Capacity HC has nearly 4 times the phosphate removal capacity by volume in saltwater as regular GFO, is more dense, so it fluidizes well in a reactor with reduced channeling, and is more mechanically stable for fewer fines after rinsing. BAYOXIDE® E33 HC EFFECTIVE PHOSPHATE REDUCTION FOR AQUARIUMS Aquariums enjoy great popularity. In many cases, however,they require a great deal of maintenance to protect the animals and plants - and ultimately to keep them looking beautiful. In this context, the phosphate level in the water plays an important role. Excessive phosphate causes increased algae growth in freshwater aquariums and serious harm to fish and corals in saltwater aquariums. LANXESS has developed two synthetic iron oxides in granular form specifically for use in aquariums that quickly and effectively reduce the phosphate concentration in the water. Bayoxide® E33 HC has a significantly higher absorption capacity, particularly in saltwater aquariums. An additional advantage is the increased mechanical stability of the product. Even when severely stressed, the water remains clear and does not discolor during treatment with this specialty product. No discoloration or clouding Bayoxide® E33 HC is characterized by its particularly high abrasion stability. If it is pre-washed, Bayoxide E33 HC yields almost no further fines, even when mechanically stressed.