Aquaero with the new Powerbooster able to control DDC pumps!

[Shoggy]

I recommend to check a video about the aquaero, multiswitch and tubemeter. That will give you a better idea of it. There is also a making of video which is pretty interesting in my opinion

You can connect two flow sensors but in this case you will lose fan channel 4 because it will be used for the second sensor.