You could have a display refugium next to the DT (seen really awesome ones). Personally would skip a HOB
refugium b/c it's too small to really effect nitrates and pretty expensive for just growing pods
(which will colonize in your DT as well). If you can't have a canister filter either, then I'd recommend getting a HOB
filter like aquaclear 110. You can use that for a HOB
refugium if you want...and can add bags of carbon and GFO
. Don't have an MP10, but I know they are pretty powerful. If you can afford the mp40 definitely get one.