Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Don't buy it!

I purchased this product based on other reviews. Well, this 75" blanket doesn't fit on my 50 gallon heater. I thought I was smart to measure the tank's circumference before ordering it, but I forgot one thing.The circumference of the tank is 75", and so I thought it would be a perfect fit. Well, it turns-out that the blanket is 3.5" thick and so I forgot to compensate that the blanket's thickness will reduce the overall length as I wrap it around the heater. So now it's 1 foot short and I can't close both of the ends.Besides looking ugly, it wouldn't be effective in its job to save energy. Now I will have to go look for an insulation piece 1 foot x 4 feet long from Home Depot to cover the silly opening.It's funny that they're advertising this product for 60 gallons when it doesn't wrap my 50-gallon tank that has 75" circumference. I suggest you measure your tank first and then add at least 12" on top of it to get a total blanket length you need. Good luck!