Mark, that is what I wanna do too, when I get my basement done and the 180 setup, I will probable get a corner tank (for sea horses) for the 1st floor and tie to the main system, with will have a 100g
sump, 40g
fuge, 40g
frag tank, 20g cube anemone tank and probable a xenia tank that I don't know how big will be yet.
When it all done I'm gonna be looking close to 500g of water.
Gustavo