I use ordinary shelving hardware to 'hang' my lights above the tank.
Just get the hardware with the vertical rails that have multiple slots. The horizontal arms fit into the slots that are spaces .5 - 1" apart and face outwards towards you. Just place these arms in the slot you want to adjust. The light fixture then rests on the arms.
Takes two screws in each vertical rail to support most lights.
Obviously, you cannot rest a bulb or glass covering on the arms, but I have used many light fixtures (all glass, perfecto, etc) and they all have enough space so the bulb is not on the arms.
The length and positioning of the vertical rails determines how much adjustment you have. Totally up to you.
I have done this with many size tanks. If a large light, you may want to drill into the studs, but the drywall has held the smaller lights (36" double tube) with no problems.
You do lose a tiny bit of light as the fixture rests on the horizontal outward arms and there is a small shadow, but this has not been a limiting issue for growth.
This also works for my MH fixtures, since the bulbs are spaced, I just placed the two arms between the bulbs.
Hope this helps.
This site has given me much good info already, so wanted to return the favor.
Just get the hardware with the vertical rails that have multiple slots. The horizontal arms fit into the slots that are spaces .5 - 1" apart and face outwards towards you. Just place these arms in the slot you want to adjust. The light fixture then rests on the arms.
Takes two screws in each vertical rail to support most lights.
Obviously, you cannot rest a bulb or glass covering on the arms, but I have used many light fixtures (all glass, perfecto, etc) and they all have enough space so the bulb is not on the arms.
The length and positioning of the vertical rails determines how much adjustment you have. Totally up to you.
I have done this with many size tanks. If a large light, you may want to drill into the studs, but the drywall has held the smaller lights (36" double tube) with no problems.
You do lose a tiny bit of light as the fixture rests on the horizontal outward arms and there is a small shadow, but this has not been a limiting issue for growth.
This also works for my MH fixtures, since the bulbs are spaced, I just placed the two arms between the bulbs.
Hope this helps.
This site has given me much good info already, so wanted to return the favor.