I looked at those. One nice thing is they also have an app that will send you an alarm if your temp gets out of wack. Also read some mixed reviews on their dependability so thought maybe a more commercial controller might be more dependable but I guess you never know for sure. Using it on my 125 reef tank with two 300W heaters for a couple of years. So far so good. Planning on getting a couple of the Bulk Reef supply (BRS) titanium heaters for the new tank and hooking up with the Ranco.Ink-bird makes easier controllers for aquarium use. They also have ones for just heat or for heat and cool.