The Matala brand compressor company should have the compressor specs. The pond shop may not have 5/8" fittings thus you would have to use bell reducers to up size the manifold yourself. I doubt the compressor will have enough cfm for 2cfm more for each diffuser. IMO those diffusers should have minimum 0.5 cfm (best is 1+cfm) each for adequate bubbling action. Remember to clean the diffusers each year usually Spring. The pump will operate 2 9" diffusers although just not as strongly if they were receiving 2CFM each. IMO the system will do what "most" ponds 1/3 ac need for bottom aeration. If you mount the system at the pond and split the air, the two 3/8" airlines should work okay because this style of compressor is designed to produce higher pressures (20-25psi) and the amount of back pressure from the 3/8" airline will not be very detrimental to the pump other than somewhat prematurely shortening the pump life span due to it having to run at a slightly higher pressure compared to operating with 1/2" or 5/8" ID airline.

Last edited by Bill Cody; 01/18/23 08:44 PM.

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