ok here is a list. Of course if you go with three MH you would ask for three retro fits..
Lamp Clip Pair, T12 (1.5" VHO / Std bulbs) holds VHO bulbs
retro fit MH reflectors should come complete with socket and already wired (1 per MH you plan on using and use correct wattage 175...250...400
either they have one ballast that will run all MH which ins the picture of the big blue thing I posted...or you can get one per MH again need correct wattage...
VHO ballast. they have ones that run up to 4 bulbs... thats what I have it comes with all wiring (at least mine did)
correct wattage MH bulbs... I use 10k hamlitons..more yellow. the higher up you go (14k) the bluer the lights the lower the yellower
and I use 03 actinics form URI they have the 180 reflector in the bulb.
Moisture proof end caps for the VHO's and that should be all... I hope it helps. email me if you need the website. I am not sure if I can post it here....
czayfman@tampabay.rr.com
again good luck