du, I second the quick disconnect fittings. They ain't cheap, but they do make life easy. They don't work so well if you spit the gasket out into the pond with the discharge water tho..... blush

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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).