Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Pump seized after < 1 year 8 hr/day operation

I bought the Beckett Versa Gold Series model number G535AG20 535 GPH Submersible Pump to replace a similar Versa pump that had been running for at least several years before giving up the ghost (this previous pump was installed by the prior owner of our house). Installed in Dec 2010, in a small outdoor pond. The pump is connected to an in-line UV filter to keep the algae away. Temperatures here in La Jolla never go below freezing, so we run it on a timer that turns the pump on for 8 hours/day, 24/7 year round. It seized up a couple days ago. I pulled it out of the pond and could see no visible damage. I removed the weed guard on the thing and the propeller seemed fine, with no debris or other obstructions. I could spin it with my finger just fine. When I plug it in, the motor hums but it doesn't spin. I wish this thing would last more than a year...