tsdid
Member
I am in the process of setting up a 180 tank, I want to do 250w metal halide and t5 for lighting, my question is. I want to have the mh's of the tank at least 9" so the water doesnt get to hot. I think that will be pleny to get to the bottom of the tank. My plan for the halides are to have them on for a few hours of strong lighting for things that need it and the look. I will have 10k and actinic t5's to suppliment when the halides are off. my question is if I have the metal halides off the water 9-12" where do I put the t5's they would be blocking some of the light from the halides, and t5's would loose allot of their effectiveness up that high correct?