Those sintered filters that come with the compressors won't help much. They will get clogged quickly. You need to rig up a filter, something from a small engine. IIRC Bill Cody has some that he had a guy make the pieces/parts that uses an air filter from a Tecumseh Motor.

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3/4 to 1 1/4 ac pond LMB, SMB, PS, BG, RES, CC, YP, Bardello BG, (RBT & Blue Tilapia - seasonal).