Hi Gooliver, are u going to have to use a chiller? I've got the exact same tank as you. Building my own stand and canopy, wasnt thinking of the heat from the lights and only built the cannopy 8" hith and 2 of that hangs over to cover the plastic around the top of the tank. I'm prolly gonna do pendants and they will only be ~4" off the water surface if i mount them as hight in the canopy as I can. I'm thinking of tearing apart the canopy that is 90% done and making it 12 or 16" tall so i can adjust the lights up and down if needed.
Your canopy looks about the same as mine. So, u think u r gonna need a chiller? I'm worried I will need one depending on the lights I get...
thx
LT