I recently bought a 400 watt mh/hps and ballast. Was trying to figure out how to hang it . This is what i came up with and thought i would share. I bought 6 5ft 1inch pieces of schedule 40 and 3 5ft 1/2 inch pipes. Got 4 1in 90°s , 2 1/2in 90°s and 2 1in t's and a reducer to go from pcv to threaded pipe since i couldn't find a reducer that would let the pipe slide so i can adjust the height of the lights. I drilled 6 holes 6in apart so i can slide the 1/2 in piece as tall as needed as the plants grow. It cost 27 dollars and should suit me well.