Question,
When you connect the mps flow 400 via Aquabus, do you use the three or four wire cable?
The flow sensor requires 5vdc power which is supplied via USB or the Four Wire Aquabus cable. It is permissable to use both the USB and three wire Aquabus cables at the same time.
As for the Aquastream XT Ultra, I also had one in my system, It showed up under Pumps with the basic functions you list, and the external temp sensor showed up under temperature sensors when connected via Aquabus.
Unfortunatly, Aquacomputer has said elseware in these forums that the full functions and control of the Aquastream XT that was available under the old Aquasuite 4.72 is not possiable in the new Aquasuite 2012. Personally, I think that they are not quite done with the Aquastream integration into Aquasite 2012, because if they were, I think the Aquastream XT 1 and 2 would not show up as grayed out if no Aquastream pumps are connected, and that the Aquacomputer brand pumps, (D5 and 600) would show up under the pumps tab instead of in the mps section if they are installed.