I recently upgraded my 5 gallon nano to a 10 gallon. I am using a penguin mini filter on one side of tank (filter and adds gentle current to that side) and a custom made hang on back refugium on the other side (adds filtration and current).
I do not need powerheads with the current these two provide, and for lighting i purchased a CSL 20 inch w/moonlight. This light offers 81 total watts, one 40 watt actinic, one 40 watt 10k and 1 watt moonlight. seperate cords/switches and a built in fan.
I am growing LPS , SPS, Zoo's, Shrooms, and leathers. I have 2 small fish and a cleaner shrimp. Hope this helps!