I noticed today that from inside the house that it looked like waves in the pool. I had the pump running. Just cleaned the filter last night. The filter is making like a pulse of bursts of water while the water is also coming out like normal in between the bursts of water. The extra bursts of water has never happened before. I shut the pump off checked everything. Put it back on and for a few minutes it ran like normal then the pulse of bursts happened again. Does anyone no what I should do?