I was vacuming out my pool and noticed tha I had lost suction, so I cleaned out the filter basket and returned to vacuming. I did this several times, with the filter setting on waste,when finished I backwashed the filter and noticed that the water coming out was not as forceful as usual. When I turned the knob back onto filter I noticed the water coming out of the return into the pool was week as well. Thinking I had a clog some where I removed the pump and cleaned the lines but no clog. This is a new pump bought at the end of the season last year. Anyone have a idea on my problem.