Pond Boss Forums INTRO Questions & Observations 6 inch sewer drain pipe.

SDR 35 pipe is lighter and thinner than Sch 40 and weighs 2.36 pounds per linear foot in the 6 inch size. It is also considerably cheaper than Sch 40. I used three inch SDR to make my fish feed containment rectangle which is about 10 ft by 2.5 ft. It floats high in the water, and is staked to two steel pipes driven into the bottom out from my little dock.