36 or 55 watt Bright Kits
The 36W CF
is 17.5" ... it is a kit, so you will have to custom build a canopy to house it.
Alternative: use a glass top, <you will prob have to buy a 24" & have a glass shop cut it down> and hang a 24" fixture above. It shouldn't look too bad just sticking out an inch on each side.
80 gal FW with 30 gal DIY wet/dry/sump.
9 fancy golds, 1 hillstream loaches, 1 rubber-lip pleco (C. thomasi), 3 SAEs, small school of white cloud minnows, planted.