Here’s my current Home Assistant setup for my bookshelf aquarium. I wanted something that gave me both automation and peace of mind without needing to constantly check the tank manually.

The dashboard includes:

* **Live aquarium camera feed** so I can quickly check on the fish, water clarity, equipment status, or make sure nothing looks off while away from home.
* **Water temperature monitoring and automation** with historical graphing. I can monitor temp trends throughout the day and use automations to control heating/cooling behavior if temps drift outside thresholds.
* **Aquarium light controls** with adjustable brightness sliders and scheduling automations for sunrise/sunset style lighting cycles.
* **ATO (Automatic Top Off) reservoir monitoring** using a water level sensor that tracks how much freshwater is left in the top-off container.
* **ATO safety automations**:
   * If the reservoir level gets too low, Home Assistant automatically shuts off power to the ATO pump to prevent it from running dry or burning out.
   * When the ATO pump powers on or off, I get instant phone notifications so I know when the tank is topping off.
   * This also helps catch abnormal behavior early if the pump starts cycling too often.

Overall the goal was to make the aquarium more “self-managing” while still giving me visibility into everything happening in the tank from my phone.

My Fully Automated Home Assistant Aquarium Setup (ATO Safeties, Temp Control, Notifications & Live Camera)