Instruct: Classify a review into positive or negative sentiment.
Query: Powerful Pump

I have been using this pump for about a month, and it has been working well. It pumps a pond at the bottom of a waterfall, through a filter, and into the upper pond. The lift is about 3 ft, so I get about 500 gph for the system.The pump seems sturdy and well built. No problems so far.The only issue with the order is that the description said the filter was a foam block, when in fact it was a plastic cage. I don't have an issue with this because the cage works better in my application (pumping some silt is not an issue).