Hello ICMag, I thought I'd write up a little tutorial thread on how I built my tripod lamp holder. There are a few ways that you can setup your lamps for a stacked vert grow, my last run I had 2 bulbs connected with chains which brought about some problems including dead zones and bulbs not being fully independent.
The new design leaves the 2 bulbs fully independent from each other and both bulbs will be fully adjustable to the correct height with ease plus it's very stable and will last a long time.
Items and tools required
Dutch Barn style reflector, you will want one with the aluminum strip that runs up the back of the shade, pictures below.
A pair of pliers
Drill bit, bolt, & nut that need to be the correct size to fit through the tripods small mount piece.
I went ahead and bought some shades, I needed 3 new ballasts anyhow so I bought reflectors & bulbs in the package deal, I bought the dutch barn style reflector which are one of the cheapest reflectors that you can buy, I bought them for 1 thing, the strip of aluminum that runs up the middle of the shade, the lamp holder is already attached, here is the shade:
Note the aluminum with the maxibright sticker, I bought the shades just to get that strip of aluminum, very inexpensive.