From your list I see 5 MPS devices, two D5 pumps with aquabus, two aqualis base for D5 with fill level sensor and one flow sensor.
The real time clock has it's own aquabus address (111), and does not take away from the four MPS addresses available (12, 13, 14, 15).
One possible scenario to connect your 5 MPS devices could be:
- connect both D5 pumps to the motherboard using the USB port
in the aquasuite D5 pump system tab > aquabus configuration panel for both pumps, set the pump to Priority: USB
in the aquasuite D5 pump configuration tab set the pump power for both pumps to get your desired flow level
pumps are normally set and forget, so you should not need the aquaero to control them
if you want to display the pump RPM and/or power level in an overview page, you should be able to pick that up using HWiNFO and Windows Services
- then connect the two level sensors and the flow sensor to the MPS High port by daisy chaining two aquabus Y-connector 4 pins
set the addresses as needed, and set the Priority to aquabus for all three devices