Questions about Aqua Computer Aquaero 6 LT

According to the manufacturer, this is possible. You can connect up to 2x aquastream XT/ULTIMATE pumps and 4x mps-based devices (flow sensor, pressure or level sensor and D5 pump with aquabus). Depending on how your circuits are set up, this should be sufficient for two circuits. In addition, you can store up to 4 independent curve profiles for the fan control, which should also be sufficient for 2 circuits (page 85/86 in the DE manual).