I'm doing a leak test and have a quick Q

[Aquattro]

Yes, run it with the skimmer going. You'll want to fill it to the point where you can turn on all the pumps, then continue filling until the sump is at your operational level. Once here, turn off th epower and make sure there is enough room in the sump for the water that will drain back from plumbing and that above the overflow line. Be ready to hit the power if the sump is going to overflow.