here is what i have going. found a 55 gallon tank( 48x21x12 ish) and nice stand at a garage sale for 25 bucks. built a homemade hood one piece with a 3 in. devider in center. made sliding glass access for ea. side. could put one 48 in. twin bulb. or two 24 in. twin bulb fixture. lowes has afordable T8 fixtures. i am unsure of proper bulb size (lumens , K's, watts. all confusing). the tank will most likely be a fish only tank. thinking three fire mouths and three convicts. all sugestions welcome.