Quote Originally Posted by avatar View Post
just to add, for the "old" ghl eheim pumpcontroller you need a rs232 port. the profilux 3 has one, the profilux 4 not.
can i add the rs232 port (https://zeeaquarium-winkel.nl/ghl-plm-rs232) to the profilux 4 and add and use the eheim controller?
Hello,

No Sorry

Gaël