My last tetra heater got stuck on and fried my son's glofish tank...I would steer clear of them.
So if i put my heater up to 90 and have a temperature controller and set it at 82 it wnt go higher the. 82?
I run AquaTop on my tanks. I've had one running over two years without issue, although that one has started to have slightly irradic temps over these past few weeks. They are usually pretty cheap on Amazon and are currently the only heaters in all of my tanks.
I have been wanting to try the ViaAqua heaters because of their price point so it's great to hear that they are working for souzie. I will probably give those a go next time I buy heaters.
The main thing is to make sure you have a good controller to act as a backup in case they get stuck on. This will protect your fish from getting cooked. Believe me, it's not a fun experience. I use InkBird 308 controllers and a lot of people on here use Rancos with great success. The InkBird 308's are about $35 on Amazon. I just bought another at $33.99 the other day.