Hakko Air Manifolds
Air Manifolds are a very convenient, and necessary method of distributing air to where it is required, and manifolds also enable you to control the air su ...
EnhanceAirandtrade; Aeration Bypass Manifold
When using an aeration system for winter de-icing, the diffuser needs to be moved from the bottom of the pond to an upper shelf. Save time and hassle by i ...
Two-Way Splitter - 1/4 x 3/8-in.
Use the two way splitters to divide air from a single outlet to two separate lines. 1/2-in. brass ball valves are included to control airflow down each li ...
Two-Way Splitter - 1/2 x 1/2-in.
Use the two way splitters to divide air from a single outlet to two separate lines. 1/2-in. brass ball valves are included to control airflow down each li ...
Valved Outlet Assemblies
Aluminum and brass design Includes swivel union for easy removal from compressor 1/4" air inlets - designed for us ...
Air Compressors Outlets
Gast Air Outlet Assembly Us ...
3/4-in. FPT Check Valve
This check valve installs on the inlet side of the rotary vane compressors. Installs between compressor and inlet air filter. Prevents back flow of water ...
Check Valve Assembly
The RVC/ RVC2 assembly is designed to go on the inlet of the rotary vane compressors. From time ...
Air Manifolds and Valves
Air diffusers come in a variety of styles and sizes and have a very long life. Choose the air stone size and quantity which will match the air output of your air pump. Most air stones are rated to deliver or allow a certain amount of air per minute. Usually they are rated in cubic feet of air per minute or CFM. A small air stone may only allow 0.05 cubic feet air per minute. A large size air stone might allow 0.5 CFM. If you use too small an air stone or too few, you will place excess back pressure on the air pump. You can increase the number or size of stones or use a pressure relief valve.
To convert your air pumps rating of Liters per Minute to Cubic Feet per Minute divide LPM by 28.25 to give CFM.
Example: your HAKKO 40L will deliver over 50 LPM at 58 inches water depth. 50 ÷ 28.25 = 1.77 CFM. A 1.5” x 1.5” ceramic air stone will allow 0.25 CFM, you should use at least 7 of this size air stone.
So how much air do you need?
| Pond Volume in Gallons | 1000 | 2000 | 3000 | 4000 | 5000 | 6000 | 7000 | 8000 | 9000 | 10,000 |
|---|---|---|---|---|---|---|---|---|---|---|
|
Liters of air/min required to maintain Dissolved Oxygen at Koi Safe Levels |
40 | 80 | 120 | 160 | 200 | 240 | 280 | 320 | 360 | 400 |
These numbers are intended as a guideline. Your application may vary according to stocking levels. (In general terms, 40lpm per 1000 gallons is a good rule of thumb.)