I have a 75gal with only a few zoanthids, other polyps, some softies, and a couple of fish, with ambitions to someday have a gorgeous lush reef. Water exchange is fine with the main tank being fed by a Mag 9.5 in a 20gal sump. I have a 140gph powerhead in the display tank right now to simply keep things moving while I figure out a more permanent solution. I know I need more water flowing in the tank, and would appreciate opinions on how to best achieve this. While a wavemaker would be preferred, it’s not in the budget for a while, at least with the prices I've seen.
I originally thought about a Koralia #2 (600gph) and #3 (850gph) combo (or just 2 Koralia #2's), but that seems like a bit much, as I don’t want to blow everything away. Plus, we’d like to minimize the viewing of large powerheads in the display. That said, I’m now thinking of getting 4 or 5 Koralia Nanos (240gph), which are super tiny, to create current in more locations throughout while minimizing dead spots. Of course, I'd pick up a couple at a time to spread the cost out.
Any thoughts or ideas would be appreciated. I'd also consider any used gear to accommodate a solution, if anyone has something that would work.