Quote Originally Posted by chort55 View Post
I would guess with the 6" x 20" heat sinks rapidled.com offers you could get away with 2 DIY fixtures, but it may need to be supplimented w/ some t'5s still.

Also, I have seen places where you could actually buy a 5-6' heatsink if you wanted to.... little more money but not a ton and you could have a much greater spread and more room to add more LEDs if needed.

I am starting with 3- 24 LED 6x9 heatsinks on my 180g, underlit probably but I have planned to suppliment w/ t5 from the begining., but with my rock work it should do the job (as I have 3 "pilliars/ piles") t5s are mostly for filling in the gaps between heatsinks and added color spectrum (didn't get red led's, so I plan to run either purple+ or coral+ bulbs to get some of the red spectrum)
What are you keeping for corals? Your bracing divides your tank into 3 sections I gather.....I wish mine was like that.