I’ve had a skimmer going for three weeks perfectly fine. It broke in quick and has been working but last week i took out my canister filter as for the past month I’ve been transitioning from that to a sump. Suddenly today it filled up completely in a matter of hours. I looked in the tank and there’s no empty snail shells, all the fish are fine, and the coral looks a bit agitated but not much. Does anyone know the cause of this?