For a 48" by 18" wide i'd go with the mini's and 250w and you'll be fine. Maybe a little wasted light on the sides unless you keep them closer to the surface.
I think the standard Luminarcs are too wide for a 75g. You can use them, but 4+ inches of the reflector are going to have to hang out passed the back and the canopy is going to have to be at least 12 inches tall imo (for the reflectors to be 4 inches over the water). You might want to check out the minis as Luke mentioned.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.