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