Instruct: Classify an Amazon review into positive or negative sentiment.
Query: Totally disappointed!

I was so hopeful this would be the answer for heating my winterized tub for my 15" pleco. It has not worked since we installed it. It can be turned up to 90*F and it will not heat to anything past 65*F (which is the temperature in the garage). I am very disappointed and would not recommend this product to anyone. If I could give it zero stars, I would.