Superb tool for eradicating green water in garden ponds.

Max pond size 4500 Litres. (1000 gallons)
Max flow through 2200 Lph 500gph. (we have used these with lots more flow)
9 Watt UVC bulb.
Hose connection: 3/4", 1", 1 1/4", 1 1/2" , hosetails glow at night (so you know it's working) spares readily available (see hozelock spares) hosetails also can pivot for easy fixing, a very compact unit.

Superb tool for eradicating green water in garden ponds.

Max pond size 14,000 Litres (3000 gallons)
Max flow through 7000 Lph 1500gph. 11 Watt UVC bulb
Hose connection: 3/4", 1", 1 1/4", 1 1/2" , hosetails glow at night (so you know it's working) spares readily available (see hozelock spares) hosetails also can pivot for easy fixing, a very compact unit.

Superb tool for eradicating green water in garden ponds.

Max pond size 27,000 Litres (6000 gallons)
Max flow through 13500 Lph 3000gph. 2 x 11 Watt UVC bulbs
Hose connection: 3/4", 1", 1 1/4", 1 1/2" , hosetails glow at night (so you know it's working) spares readily available (see hozelock spares) hosetails also can pivot for easy fixing, a very compact unit.