I recently bought an octo xp-2000 cone to replace my 4 year old bubble magus skimmer. I set the top of the bubbles about 2 inches below the collection cup and the skimmer does its job, however out of no where the water level goes up about 4 inches and causes my collection bucket to overflow (i run a hose off of the cup into a 2 gallon container). I had to back the valve off all of the way to get the water level to drop back where it was. Look at it the next day and the water level is like 4 inches below where i had it set, crank the valve in to raise it, good for a few days, and then it overflows again.... Anyone else have this issue? I didn't sell my bubble magus yet, thinking of putting it back online and selling the octo. I hate having water on the floor in my fish room every few days, and the annoyance of having to adjust my skimmer all of the time, not to mention throwing my salinity off due to all of the make up water required.