Are temperature and pH something you monitor closely and on a regular basis?
If I want something WiFi on my aquarium, I'm happy to use wifi outlets and control the lights on my aquarium.
If you have a need to monitor either closely, it might be a different story, if I had such a need, I'd be more likely to get a full controller, so I can monitor (and record) parameters such as these, and maybe do something about it too.