Aeration For Koi Ponds > Airstones and Air Diffusers
Good Pond Aeration is an essential requirement in all good Koi ponds. All Ponds need a plentiful supply of oxygen. Both your fish and the biological filter require large amounts of oxygen to thrive.

A good quality air pump such can power several air stones even at five or six feet depth. It is a good idea to place a few air stones directly in the filter system to provide oxygen for the filter bacteria as well as in the pond itself.

Oxygen will also be added by water splashing into the pond on its' return from the filter and waterfalls are especially effective in this respect. However, bear in mind if building a large waterfall the possible nuisance from the noise at night and also put in a system to bypass it in the winter. A large waterfall will have a big cooling effect on the water.

There is less need to worry about the oxygen level in the winter as cold water holds far more oxygen than warm water and your fish will be less active and require less oxygen.
Our Products
These Super high quality rubber weighted air diffuser, are excellent for aeration of ponds.Supplies pond with a stream of small bubble for that extra needed oxygen.The Diffusers are manufactured from synthetic rubber which has excellent ozone resistance, solvent resistance, heat resistance, and weat...
£15.95
OxyTex CWS, from Oase is a world innovation which combines 2 important filter system functions: Aeration and filter surface. The Oase Oxytex 400 supplies the pond with vital oxygen and keeps a lot of space ready, through its unique bio-technical fibre structure, for important micro organisms that ef...
£69.95
Korean Ceramic Airstones are ideal for small ponds, quarantine systems and aquariums.These Ceramic Airstones are very durable and extremely long lasting.Available in the following sizes:30mm x 130mm - 4mm50mm x 200mm - 8mm50mm x 300mm - 8mm50mm Air Ball - 6mm...
£26.95
Domed Shaped High Output Grey Pond Airstone made from carborundum and ceramic material.Output will depend on Airpump Capacity.High Output Dome AirstoneLong Lasting Fine BubblesOne Of the Biggest on the MarketplaceAvailable In Two Sizes:6 inch - 150mm & 10 inch - 260mm - Sizes approx6 inch has a ...
£16.95
These Ceramic Cylinder Air Stones are ideal for ponds and large aquariums lots of pore providing lots of small bubbles and oxygen to water also long life.120mm x 20mm with 4mm connector....
£4.25
A free standing pond aerator, which creates masses of air.Stainless steel base weighted base.250mm EPDM diaphragm.Air inlet hosetail 3/8th Air Valve, 1/2" Air ValveIdeal for free standing in ponds, quarantine tanks & growing on tanks....
£69.95
Blue Ball airstone, approx' 2 inches diameter for pondsThese Standard Blue Airstones are small enough to fit in a filter system as well as being used in a pond system.These Blue Air Balls are ideal for delivering large amounts of oxygen into the pond and filter systems..Sold in packs of 5 or 10K...
£13.95
30m Standard Airline complete with 2 x Blue Standard airstones.These balls are small enough to fit in a filter system as well as being used in a pond system.These Blue Standard airstones are ideal for delivering large amounts of oxygen into the pond.Kept on Premises ...
£10.95