Air pumps and related equipment

Plant life consumes oxygen during the night and gives off carbon dioxide. This process is reversed during the day. The more organic load on the pond (fish, plants, decaying material) the higher the biological oxygen demand (BOD) Every life form is therefore competing for oxygen. Cold water can hold considerable amounts of dissolved oxygen. Unfortunately, during warm weather, the ability of water to hold dissolved oxygen is substantially reduced and during warm muggy, thundery days in summer, there is a real threat to the health of our Koi, especially overnight, when plant life can quickly strip the already low levels of oxygen from the water with fatal results for our Koi. It is therefore vital to top up our dissolved oxygen supply to ensure the health of our Koi and to ensure our filters continue to operate correctly. Oxygen can be supplied by waterfalls, venturis and air pumps. Waterfalls are extremely efficient at providing good aeration, but many ponds just don't have them, and even where present, many people turn them off at night, just when they are needed most. Venturis are extremely inefficient devices, only work near the surface and use a considerable amount of pump power to run, thus making the pond water pump work harder than it needs to in order to deliver the correct amount of water. Without doubt air pumps are the most efficient and cost effective way of providing adequate aeration to your Koi systems and we are pleased to be able to offer the best air pumps available today.

Secoh JDK Air Pumps

Secoh Air pumps are top quality, represent real value for money and will give years of trouble free service. Waterproof and very quiet and proven to be the most powerful air pumps available today. For example the Secoh 100 actually produces 145 litres / minute of air, and the 40 produces 60 litres of air/minute. Has won 'best pump' in just about every independent review of air pumps to date! Now the brand new JDK range have all the benefits of the existing range but with ultra low power consumption - as little as 55 watts for the JDK 80 !  Please specify the manifold that you prefer with your pump, for example 8 way x 4mm, 10 way x 4mm, two way x 6-8mm, three way 6-8mm with 3/4" manifold connector, four way 6-8mm, or single 8mm

Air Manifolds and accessories

Pressure relief Valves, gauges, air manifolds, connectors and non return valves. 

For all air pumps over 40 litres per minute it very important to use all the air capacity available by using all the taps on the manifolds supplied, or leaving taps open when not used to ensure that back pressure is reduced. All air pumps are generally designed to run at a maximum pressure of 1/4 bar, and exceeding this pressure can cause premature diaphragm failure (or piston wear in the case of piston pumps). Many air stones will gradually clog in use and should be changed annually. Pressure relief valves are therefore designed to protect your pump against possible damage and will indicate when air stones need changing or when airline restrictions cause too much back pressure to be present.

For all air pumps it very important to use all the air capacity available by using the appropriate number and size of air stones. Simple baked air stones are fine for a pond where they can be seen and checked occasionally. They will wear out and should be replaced annually. Ceramic air stones are much tougher and longer lasting and will generally produce finer bubbles. They are great for use in the pond or in the filter chambers under media as they wont wear out and providing they are in constant use will not block. They come in a range or tube or disc configurations, so there is a wide choice. Disc air stones come with a solid plastic or ceramic base and are weighted and not easily moved by the fish.

Oase AquaAir 250

The Oase AquaAir is a direct air injection pump installed in a floating stainless steel basket and is designed for larger bodies of water where installation of multiple air pumps and airlines/stones etc would be impracticable. The direct injection system utilises a powerful floating pump and venturi to inject air via a substantial bubble mass to a depth of up to four meters, thus enriching the water with oxygen. The unit is supplied with tethering cables and 30m of power cord.

Product features at a glance

• Adjustable injector nozzle for optimal oxygen input with depth penetration to 4 m
• High turnover rates bring standing water into life
• Extremely long service life thanks to high-quality workmanship and stainless steel elements
• Low noise underwater operation
• Fastening material included in the scope of delivery
• Optimal oxygen supply thanks to small bubbles
• Suitable for pond surfaces up to 250 m²