Bennytheblenny
Reef Geek
benny, do you think there is enough spread on these to handle a 36" wide tank? I just got my new tank 72x36x28 and I am having some lighting issues and have started to see what else is around. Rafal is saying 3 will be more than enough for my tank.
Without focal lenses and only 24" of water you can easily cover the width. I would probably run the lights 10" off the surface. Just be careful and do not start off at 100% across the board you will fry things.