| Interesting post Nancy.
What are the problems you're experiencing with the Sequence. I consider them both comparable.
Very few pumps are properly selected for individual ponds and, while the biggest problem there is efficiency, that could cause some problems on certain pumps.
The greatest problem is improper installation. Pumps are often misaligned with the connecting fittings and that can stress the housing and misalign the bearings, causing a vibration twice the frequency of the rotation.
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