So 6" x 1.5" will do it. Now to decide on barb or NPT fitting.
http://www.aquaticeco.com/subcategor...-Air-Diffusers
So 6" x 1.5" will do it. Now to decide on barb or NPT fitting.
http://www.aquaticeco.com/subcategor...-Air-Diffusers
I use the ones with the barb fitting......much less messing around.
Gary
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