aaron, look at the specs for the compressor, then look at the specs for the diffusers. Specifically look at the CFM that the compressor puts out, and the CFM operating range for each diffuser.

If totaling up the max CFM for the diffusers doesn't equal the output of the compressor at the max depth that the deepest diffuser is, then you will have to play with the valves to manually adjust the volume of air going to each diffuser assembly.

i.e. Say the compressor output is 10 cfm at 5 psi. Each diffuser has an operating range of 1-4 cfm. If you are running 3 dual head assemblies, then you'd need a compressor that has a minium output of 24 cfm @ 5 psi to NOT need to adjust the valves.

It's not the length of hose, it's the depth that the diffusers are at. IF they were all at the exact same depth, then the length of hose *might* come into play.


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