In this task, you're given reviews from Amazon's products. Your task is to generate the Summary of the review.

This worked perfectly in my tank for about six months. After six months it immediately stopped working. I was left with my fish swimming in about 15 degree lower water than it should be. This put my fish in danger. I will be contacting Amazon on money for my money back. Very disappointed. Amazon refuses to issue a refund for this fault item. It died after 6 months. Their return policy is to only refund after one month. I am extremely disappointed with Amazon's handling of this issue. BUYER BEWARE. AMAZON WILL ALSO SCREW YOU!!!!!!!!!!!!
THIS IS A PIECE OF JUNK. FAULTY AND AMAZON WILL NOT DO ANYTHING ABOUT IT.