My TS1 has stopped forming skim mate. I replaced my 1000L/h return pump yesterday with a 2500L/h pump to try and help my overflow to surface skim, this it seems to have done but at the expense of my actually skimmer no longer skimming. The overflow is gushing water down into the chamber with the skimmer in and causing a lot of air bubbles could this be a cause on no skim?