For the moment I have stopped the iron. But iron deficiency can halt chaeto growth IMO. I did not get any readings of my iron and the goal was to dose till I see in the tests. Using Oxydator can influence the content of biological available iron too. The reason why I stop was to see if the iron could promote cyanobacteria growth (have some among my GSP)
Sincerely Lasse
Sincerely Lasse