I am also considering the 60" 4 x75w led, 4 x 80 w t5.My new tank is 250 gallon, 72 x 32 x 25" high. I talked
to ATI, and they recommended I get the 4 80watt t5 one, much to my surprise. I will be keeping some sps, but they will be towards the top.
Does anybody have any issues with the 60" power module ???
I have this exact unit for my 60"x18"x24" high tank and couldn't be happier. I briefly considered getting the 8 bulb unit but it would have been too much spill over.
It is up to you but I would go with the 8 bulb with your size tank and you can grow what ever you want anywhere in the tank. Plus you have such a better color selection with 8 bulbs.
For reference my LEDs don't go past 50% right now. I slowly add 10% every month. I will cook the corals.