I got 2 50-watt Jagers for my new 20-gal tank a couple of months ago and the temp stays exactly on the 78-degree line on the thermometer. They seem ok to me. Why do you recommend Tronic?Kasakato said:They are made by Eheim. Iv got one orginal, and one new one. Both are perfectly fine, and work the same. If they dont work for you, you can always get Tronic heaters.