Used this product in my 20 gallon tank. I have used Aqueon Pro heaters before (blue handle) and am delighted with their performance to date. I've seen some bad reviews and I think the problems with this heater must be an accident. Until it happened to me, the Aqueon Pro 100W New Version melted away after just 20 days of use. I thought I had some kind of electrical fire due to a strange smell, and then I discovered that this product was to blame. The weird thing is that it only melted at the bottom, but it must have gotten hot enough to melt the heater's suction cup holder. This heater is said to be rock solid and I am very disappointed in how it failed and only lasted 20 days. I'm sending it back today for a replacement and checking the other one for problems as well. I tend to order extra stuff from Revain for emergencies/reserves. I may have to stop using it because most of the stuff I buy goes through the return window before I even get a chance to use it. I'm so disappointed in Aquaon.
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