Bests & Worsts Reviews from Amazon

I have never written a review before but thought this would be great information for anyone that reads it. When this item was purchased In February it worked flawlessly, i set the temperature as i needed it and it was great. 7 months later i had adjusted the temp up 1-2 degrees on the twist knob to accommodate new fish placed in my setup. The unit then never stopped at the set temperature and continued to heat the water up to about 89 degrees (up from 82) when i caught it, it was still on and heating. Half of my fish have died. I have messed around with it a little bit now and it seems that something internal is sticking making the unit worthless. So, just a heads up if you have or get one of these and adjust the temp. Keep a close eye on it.