fish are still doing well. The corals however are a bit stressed due to an algae plague boomed. I used to have 0 P04, but since a week it bumped up until 0,8. Changed the rowaphos and did some waterchanges to get it back straight, but it is still not a 100%.
I'm giving the system some time for now and changing the rowaphos frequently.
I guess PO4 was buffered by the rowa, but also a part in the rocks. And that now the rocks reached their capacity and the rowa is not enough.. I'm dosing only half of the suggested volume. I'll slowly bump up the rowa volume to see what it is doing and not giving the corals to much of a shock by getting it all out at once..