PVC light stand for the top of my aquaponics tank. Basic instructions, can be adjusted for any dimension. Uses two 24" fluorescent grow lights. Has a twine lattice for plant growth if required. I plan on adding foil or other reflective surface to the top to help contain the light.
Step 1: Base
Make the base using 4 tee joints and 4 3-way 90 degree elbow joints. The two sides with the tee joints will have three pvc pieces each. Two short ones between the tees and the elbow joints and the third long one between the tees. The elbow joints should fit snuggly over the tank edges.
Step 2: Uprights and Crossbeams.
Add 4 pipes to the tees. Make as tall as needed. Place additional tees at the top of each pipe. Put in two crossbeams.
Step 3: Additional Uprights
Place in additional uprights. Again as high as you need. I needed 30" total so I placed the crossbeams at 20" to help with stability and placed the remaining 10" on the tees. I then added 3-way 90 degree elbows to the top of the uprights.
Step 4: Top Framing
Make two crossbeams for the top. Each beam is made of 3 pieces with 2 tees. I placed the tees a fourth of the way from each side.
Step 5: Lighting Framing
Make two more crossbeams. The lights I used have slots for the screws to slide into. I drilled two holes for the screws and placed them in. I then attached the crossbeams to the lights.
Step 6: Lighting
Insert the crossbeams with the lights and then the outer crossbeams.
Step 7: Finishing Touches
I drilled holes and laced a lattice of twine at the end for my peas to grow up. And then placed the whole structure on top of the aquarium.