I have been running a 125 with a 40 gallon sump for about one year. I bought it used after not having a tank for 20 years and I am new to skimmers. It came with the tank, a reef octopus 125 regal with a DC pump. I cycled the tank with ammonia and never detected nitrate. I had phosphate early on. Recently had a programming error in the apex and the tank temp rose 5 degrees followed shortly by a dino breakout (sesame seed looking ones, easy to spot on 40x magnification).
I suspect the temp helped, but I have known I have been running low on nitrate and phos. I turned the skimmer down from max setting (5 dots) to 3 dots.
Question: Do people run these on for a period of the day and then off? Or is turning it down the way to go? I am thinking instead of adding supplements I should really just not strip everything out but I am not sure how much of a change to make. Looking for tips. A link to an article or another discussion would be fine as well.