UV Sterilizer is the one tool you need to stop your pond water turning green. Circulate the water - turn over the water once every hour or two. Algae will not survive in constant flowing water.
Specifications:
05 model - flow 33 GPM is equal to 1980 GPH
Can service up to 5,000 gallon pond, average 5' depth
10 model - flow 55 GPM is 3300 GPH
Can service up to 10,000 gallon pond, average 5'-6' depth
20 model - flow 95 GPM is 5700 GPH
Can service up to 20,000 gallon pond, average 6'-7' depth
40 model - 115 GPM is 6900 GPH
Can service up to 28,000 gallon pond, average 8'-9' depth