MaxOut PRO Freshwater's unique blend combines high-grade rinsed carbon, proprietary phosphate resin and organic scavenger resins. MaxOut PRO Freshwater removes all toxins, metals and odors in the water column. High capacity carbon removes organics and polishes aquarium water. Proprietary resins unique to the MaxOut PRO Freshwater blend aid in the removal of phosphates and reduces the buildup of organics that can cause algae. MaxOut PRO Freshwater helps maintain aquarium pH levels by keeping them stable and consistent. Let MaxOut PRO Freshwater clear your water and help balance your parameters.