| everything is preety self explaintory.... there are 4 1 1/4" bulkheads and 6 3/4 returns... 2 1 1/4 are in the external overflow running down to a 75 gal rubbermaid tub... they come back via a pcx 40.. the 2 closed loops have a 1 1/4 inch drain each running to a little giant 4mdqx... then returned through 2 of the 3/4 inch bulkheads on each side... many ball valves and what not .... MANY MANY trips to home depot... i think ive gone like 4 times.... always exchangin pvc and gettin more....
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