kitsapdan
Well-known member
Just a question for the people out there. I have heard that some sps corals or not as light hungry. Is this true and if so what kind would this be? I have looked through many books and they will give a light scale but not tell what kind of light you should have. It will just say things like (need 4-9 intensity lighting) but they neglect to say if you need pc, t-5s, or metal halide. I now that metal halide is the best. But for example if you had a 20 gallon thank with a 150 metal halide light that would be 7.5watts per gallon. So what if you used pc lighting or t-5s at 150watts. All with the same output like 10,000k
