Pro-Line Aqua 4" Aerated bottom Liner Flange Kit with ScrewsPro Line Aqua 4" Aerated Bottom Liner Flange Kit with ScrewsHigh Performance Bottom Drain Fitting for Koi Ponds & Water Gardens Enhance the efficiency and cleanliness of your pond with the Pro Line Aqua 4" Aerated Bottom Liner Flange Kit, designed for professional grade performance in koi ponds, ornamental water features, and filtration systems. This robust bottom drain fitting includes a precision moulded flange, a 4" outlet, and all necessary

ensuring reliable long-term operation backed by OASE’s extended warranty

or display tanks

Is your pond plagued by unsightly algae and blanketweed

cleaning it more frequently than you'd like

Tired of waiting for chlorine to gas off or using messy liquid treatments every time you fill up your pond or aquarium

8W LED lights

and you can then empty it easily with the discharge hose

OASE Control connection cable

and various chemicals

Alternatively

For ponds up to 24000 litres without fish

Built-in oxygenator for aeration