Ratpack
Active Member
What would cause a skimmer to all of a sudden overflow? I can set it where I want it and it will run fine for days and sometimes a week or more, but then for whatever reason, overnight it will overflow and fill the cup and keep going. Luckily it is a sump model so the water just goes back in the system, but so does everything it pulled out. To get it to stop overflowing, I have to open the valve a lot, let it settle and then slowly adjust it back to where it was. Any thoughts on why it would do that? I am not adding anything other than food to the system.