I bought the Performance Pro pump and have had it installed for about a month. I could not be happier ! It is whisper quiet . The built-in speed controller tells you exactly how many amps of electricity are being used at any setting. That, coupled with a flow meter , allows you to operate the pump at peak efficiency. In my pond, that is approximately 50% . At that speed, I am pumping about 50 GPM. 75% only increases to 60, and 100 to 61 or 62. I really am glad I purchased this pump and would recommend it to anyone.
