Automating an aquarium using Sonoff devices and HomeAssistant
A combination of Sonoff devices, DIY temperature sensors and some custom logic combined with other power devices allow for a fully automated set-up. There are also other options that can include automated feeding systems too (some even using Google Assistant). I like the use of cameras too with this design as it also gives visual feedback as to what is happening.
See https://youtu.be/75BGApkBkjY