skimmer overflowing

[reef tank 2.0]

when it comes to feeding time, I turn off my return pump, as well as the powerhead in the tank. When I do this, obviously the DT water drains down into the sump. During this process, the skimmer always overflows with water. It's the only time it does it. I can't figure out why the skimmer keeps filling with water.

does this happen to anyone else? how can I stop this from happening each time?

 

[T€rm]

It’s due to the increased water height in the sump. It will do it every time. Shut down your skimmer while the return pump is off to prevent this from happening.

 

[reef tank 2.0]

ok, I had a feeling that was the solution. didn't know if something was wrong.
thanks for the help