Sort of following your build thread. You have low nutrients. You started dosing and also maybe reefroid to increase nitrate and phosphate. I’m following so far
How the skimmer fits into the overall picture? Are you trying to increase nutrient or removing nutrient?
I am trying to learn as well, so don’t take this as a criticism.
I turn off my skimmer now and then to help build up nutrient. I dose nitrate occasionally to keep it above zero. My phosphate is good , stable at 0.04 with my current gfo routine.