@ON2H20: thanks for the hint with the typo. We already saw that ourself after the video was done.

The pump was running w/o the top cover since we were too lazy to setup a loop for it. In the end it survived all tests

@Waterlogged: rare? That is a regular article which is in stock most of the time.

@dreamaxx: You can use two flow sensors on the aquaero. The second one can be used with fan channel 1. Of course in this case you won't be able to use it for fans or a pump anymore.