skimmer not skimming

[rusty shackleford]

yeah i should have mentioned, its to tall to fit under my stand in the sump.
so its hanging just outside the stand as a hob on my sump.

the water level in the sump is about an inch lower then when it was on the display (when it was functioning properly) but i compensated for that and have it dialed in, it looks to be running the same way it was when it was working on the display, just minus the foam

deffinatly give it a cleaning, cant hurt