I have a new 20 gal drilled with unfinished pine stand and canopy with a 96 watt PC bulb fired only to see if it works.
I also have a Jebo Canister filter rated for a 50 gal, a sump and a return pump rated @ 900 GPH 0 head
$230 for all
All you have to do is plumb it and dump in some fish
Good for medium light SPS, Lps, and all sorts of softies