The 1.75 cu.ft. AlphaONE is the perfect filter for ponds up to 2500 gal. and fish loads up to 90 lbs. Flow rated at 50 gpm for bio-mechanical filtration. 19" X 31" allows you to hide this unit anywhere. Every option is standard equipment. The perfect filter for the majority of ponds.
AlphaONE filters also feature the AlphaONE Life Support System, known as "ALISS", which keeps beneficial bacteria alive indefinitely during times of medical shutdowns, pumps failures, etc.
The 2" Clear Union Spring Check Valve located right under the 2 HP blower provides maximum flow and has built-in unions along with a PVC slide valve for extra security in case of spring check valve failure.