When I was running a fuge, it took up nutrients super fast. I ended up with a balanced system with just skimmer and 5-10% water changes every two weeks.
I found that when the fuge was absorbing nitrients fast and grew, my nutrients would go back up if I pulled out too much, so it was just a pain to manage.
Yeah I think I’ll have to take out some cheto tonight. Do a quick water change. My skimmer has been hard at work with some real dark skin mate.also finding myself replacing my filter pads once every two to three days.