For Ponds up to 1800 gallons (1)

For Ponds up to 4400 gallons (1)

For Ponds up to 660 gallons (1)

For Ponds up to 8800 gallons (1)

18 Watts (1)

36 Watts (1)

5 Watts (1)

9 Watts (1)

Model UVC-18 (1)

Model UVC-36 (1)

Model UVC-5 (1)

Model UVC-9 (1)