These, model 4102, adjustable from 36 to 48" (though I wouldn't go more than 42"):
http://current-usa.com/aquarium-led-lights/orbit-marine-fixtures/orbit-marine/
Had one on a 40b and was doing well. Added a second and was doing great, some decent growth on zoas (all I had in that tank was zoas). I dropped $180 on the first one and I got the second one, with a small crack (can't see it and doesn't affect performance) for $140. Doing a spring clean and willing to let both go for $200.
Mark
(201) 467-1771
http://current-usa.com/aquarium-led-lights/orbit-marine-fixtures/orbit-marine/
Had one on a 40b and was doing well. Added a second and was doing great, some decent growth on zoas (all I had in that tank was zoas). I dropped $180 on the first one and I got the second one, with a small crack (can't see it and doesn't affect performance) for $140. Doing a spring clean and willing to let both go for $200.
Mark
(201) 467-1771