Hi pegleg,
You need to browse the forums a bit, read the new
manual , or even better, take a look
here. That site is done by Namron, one of the frequent visitors of this forum. You should be able to find all the guides you need to properly set up your system.
Basically, you need to connect your pumps via USB. Set them do individual adresses, 12 & 13 is fine. Flow sensor can be 14. Both pumps and the flow sensor have the MPS board integrated, that is why they are reported as MPS type devices. You can have a total of four on one Aquaero.
Once you have set up the addresses properly, you can choose whether you want to connect them via USB, Aquabus or both. There is no problem leaving them connected with both cables.
Kind regards,
Boris.