I'm new to Garden Pond Forum and already have a question. One week ago I bought a Garden Treasures 630 gph pump from Lowe's. It worked great for one day and then It started cutting off every 10 to 15 minutes. It would turn back on after about 5 minutes. Yesterday I took the pump back and exchanged it for another pump. It to ran all day yesterday and most of today, now it is doing the same thing. The pump and the cord do not feel hot. I also have a filter with a UV light plugged in to the same plug. The light never cuts off so I don't think it is a power problem. Is it normal for these pumps to cycle or does it sound like another problem? Thanks in advance.