Thanks all! It's been a busy few days so haven't been able to reply.
I have looked into the smatfarm brand, since I have heard good things, despite the weird name lol. I also heard good things about this light: https://noopsychereeflight.com/products/k7mini The controls sound maybe annoying, but honestly the ones we have right now are not great anyhow. So no difference.
Dave, thanks for your great reply! Ill probably take you up on PMing you. Today will be our weekly water change for the three nanos, so we'll do some testing first too and see where the numbers are. As fsr as flow, yeah my sandbed has been blown all around, and i worried it was TOO much flow, so was going to look into that too (I tried to find thenl smallest power head i could for this tank). Ill take a pic later once the lights come on.
I think this tank wont be much of a mix, just almost all sps and MAYBE 1 or 2 really hardy corals who are ok with the flow and the bright lighting (GPS, e.g.).