Instruct: Classify Amazon reviews into positive or negative sentiment
Query: IDK

We thought this was a great product when we received it and put it on our tank. Now 3 months later...it is peeling off all over and has pockets of air bubbles in spots in the middle of it...how did it get in there?! It will not re-stick for some reason either. I guess we will have to take it off and toss it. What a waste!