SZELAM Aquarium Heaters 300W Sub... vs HITOP Mini Submersible Aquarium ...

It installs easily with its suction cups and stays right in place. Suctions very well.

The controller is straightforward, just click the up or the down button until you set the target temperature. It replaces my old heater + separate thermometer. The controller shows the tank temperature as well as what you have set it to be. The temp i...  Read More

It is priced reasonably within its category of digitally controlled heaters. Easy to setup and use. Comes with a sticky back so you can install it right onto the glass.

The 200 watt heater is good enough for a 75 gallon tank that needs to be heated no more than 10 degrees above room temperature. Id recommend the 300 watt as it will run a lot less to heat the tank, thus lasting a lot longer.

This submersible water heater works great! The suction pads it came with work great to keep it in place. My only complaint is that it was a nightmare to get the suction cups to stick.

Heaters are the one thing on aquarium that just go out. The power cord is about 6 feet long, and the extra length allowed me to install the heater on the left side of my aquarium even though the power outlet was on the right. It works just fine and my...  Read More

Control says 85 but registering 79. Poor quality control for checking accuracy.