Just bought the 9430 dc. I'm running it in a sump that is rather deep in the skimmer compartment. More specifically, the water level is above the top of the output pipe on the skimmer (top of outlet pipe is about 1cm below the water level). It seems to be running fine, but wanted to confirm that this won't have any negative impacts on overall performance. Should I raise the skimmer so it isn't sitting so deep in the water?