Is it possible that you make all the hardware the same wide?
The dosing pomps are as wide as the profilux 3.
So you can stack the hardware
I saw a picture of the eheim controller and as far as I can see it’s a lot smaller and can’t be stacked up or below other hardware
Is it a good idea to make a standard housing for all the hardware?
I’m willing to pay a few euro;s more when I can stack every piece of hardware I own (or going to buy)