CS 250 Euro reef over flowing

[Jaws]

Dual sp3's? Are those the pumps? I've had that happen to mine a couple times too. For me it usually means that something has accidentally got into the water either through the air or by my hands. If you do have dual pumps then just run one for the time being. If I run one pump for a few hours that is usually enough to remove some of whatever I put into the water so I can plug the other pump back in without overflowing. Glad to hear it's working again. They're great skimmers.