Just did the first water change with rsm coral pro.
I also installed a filter sock, let's see if it helps.
Edit 1:
So far so good, the water seems more clear to me already and the fish and corals seem ok with it.
I think the filter sock was a smart thing to get as any extra filtration capacity is welcome.
Also tried feeding with only with flow pump active. It was a lot easier and calmer for the fish, so it seems this is the way to feed for me from now on.