So I do plan to keep the QT setup all the time, and will put fry in it once I get my primary tank fully setup. So it won't be QT all the time.
I do plan to have bare bottom as well. Already painted sides, back and bottom black.
I already have, but not in use 2 of these sponge cube filters with one of those jet lifter from swiss tropical and a pump for it as well. I thought that was kinda loud.
When you say sponge filter with bio wheel or sponge, can you explain or show me example don't think I have seen those.