I have 3 on a 72 x 24 and they are more than enough; but not sure on a 48 deep. My thoughts are purely anecdotal and I can only compare what I see in comparison to the Orphek v4's that I have on my old tank. I have always been a big Orphek fan and only made the switch because a square light fit my new tanks dimensions much better. So far very impressed and very happy with the Stratons. Colors are more vivid and there is no doubt in my mind that the spread is much more even.Dude thank you! Your experience is invaluable to me. What size is the tank you're running 4 on?
My tank is going to be 84x48x28. Do you think 4 would work for me as well?