Oxygen Is An Absolute Critical Need In Any Fish Pond. Blagdon Koi Air Pumps

Koi Air from BLAGDON is a reliable and convenient way to supply fish aeration to ponds and filters. Koi Air is known for good and essential aeration for pond water and fish, because it able to pump to several metres depth, with many air stones. Designed for operating in large koi ponds.

Koi Air Pumps Models:

In large heavily stocked fish ponds an air pump is an absolute necessity

One of the very best koi keepers in the world once said to me something I will never forget. Of course he was exaggerating a bit. Nigel said: "There should only be three things in a pond: water, fish and air ( ie oxygen)."

Air is absorbed by natural water-courses at the interface (the place where air and water meet - ie the surface). This air is then mixed by convection throughout the water mass. A tiny part of the oxygen in the air (air contains about 21% oxygen) is transferred into the water to be used by fish, plants and bacteria.

On a calm summer's day in a lake the amount of oxygen in the lake would be lowered. The reasons are twofold:

The interface between the air and the water is at a minimum because there is no surface movement. The higher the temperature of water the less oxygen (or air) the water can absorb and hold.

On the other hand during a gale in winter the oxygen levels in a lake would be at their highest. The reason for this is the direct opposite to those above namely ....

The interface for air transfer into the water is at a maximum - waves rise, crash, break along the bank and continuously present a new air/water interface across which air can be absorbed by the water. And because the water is colder it can hold more oxygen.

The pond filter and oxygen conclusion:

Water must be pumped through a pond filter 24 hours per day, every day without fail except for very short maintenance periods. You cannot go to bed, shut off the pump until the next morning and expect your fish to like it.