Vertex Alpha skimmer overflow

[Stones]

Is your outflow valve all the way open? In my old sump, I couldn't raise the skimmer due to the height of my stand being too short so instead I raised the red tube in the outflow up above the white pvc "T" and then locked it in place with the set screw. This basically allowed more water to flow through the outflow faster which lowered the height of the foam column in the skimmer.

Worth a try and alot faster than building a stand to elevate your skimmer.

I noticed these skimmers are prone to overflow quite rapidly after a power outage as well due to being extremely sensitive to the height of the water columnn in the sump. I also installed a float valve in the sump and another in the collection cup to kill power to the skimmer in the even that the sump level gets too high or if the collection cup gets 3/4 full. Was probably the best little upgrade I've ever made to my system.