The closer you get them to the surface the more blue you'll get into the tank. I have 3 VHO's about 3" from the water surface and my halides are about 7" from the water.
rich i dont know what jose was using, but i have this old bulbs, the new bulbs are comming in soon i just ordered the MH bulb and two new uri ones. are those small reflectors any good?
what do you mean? back 10 inches up?
man i moved them already LOL right now they are 3 inches above the water with 6 inches for the MH bulb to shine thru in between the VHos