Why not a plastic well point/screen with a filter sock over it? Or just the well point/screen by itself?

http://www.lowes.com/pd_41832-15649-PPWP...&facetInfo=


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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).