koiguy1969
GIGGETY-GIGGETY!!
o.k. i used a rubber maid 70 gallon stock tank for my filter,its not finished yet, but no rush. anyways, i used 1&1/2" pvc pipe 1" hose nipple reducer with threaded end cap. a top elbow pipe which i will drill a 5/8" hole in and feed a length of plastic tube down into the down pipe a little ways for a venturi, it will be plasty welded as are my inlet pipe, and the two 3" long pipes that are risers for the 2 bottom pipes with the elbows where the water shoots out against the inner walls of the tank. this creates a whirlpool effect, that swirls all the crud into the center of the tank. with the risers and the two 2" tees the outflow pipes sit 4" off the bottom, giving 4" of settlement area, so the crud doesnt build up in the media,this minimizes the chance of clogging. i used the 2" tees on the riser pipes because they allow for a hinging around the 1&1/2" pipe so i can disassemble the upper pipes easily. i am making a 10" waterfall weir from plastic; 1/2" plastic sheet stock, that will welded together and fastened on the tank with stainless steel nuts bolts and washers, and naturally siliconed for a good seal. you notice i used a fernco coupler at the top elbow for a strong hold but easy disassembly too. i also will be putting a 2" shower drain dead center in the floor of the tank elbowed out past the tank with a ball or knife valve for dump cleaning. the tank will rest on cinder blocks,giving a place for the dump assembly to sit between.