I have a intex pump with a 4ft by 15ft pool and the intex saltwater system. My saltwater system is saying there is low flow. i clean out and did the maintenantenance on the salt water system and i put a brand new filter in the water pump. But i think the pump is broken there seems to b a little but of a low flow of water in coming out. I don't know if it has anything to do with me running the pump without a filter for a week. Also now when i open the air release valve on the top of my intex pump water comes out and before air would come out not water. did my pump broke?