Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Unfortunately, it did not work.

We have a large ornamental pond with a pool type filtering system. We keep the water clear and chemically balanced and bought this foam insert to filter particulates that may drop in the water. Unfortunately, when we tried to rinse it a week after it was installed, it just simply fell apart. Maybe it will work in a different environment, but for us it was a waste of money - absolutely of no use at.