To get a bigger WAF at home, I smartened the fish tank a little.
Now we can read the temperature, control the pumps and switch the lights with Hubitat.
And OFC, create extra buttons on the dashboard 
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Now you need to work on automating the cleaning of the tank, the topping off of the water, and feeding.
I had done the same with our hermit crabs and the reptiles in the past with my StarGate. The heating lights, fans, water circulation, etc. It was fun but still had to clean cages and the wife made me get rid of them after being startled by a green lizard thing in the bathroom in the middle of the night. 
I was looking into installing some sort of automation for my fish tank. The already made stuff being pricy and the DIY open source requiring lots of tinkering, I wonder how I could use hubitat for the task. The pump, heather, oxygenation and lights could easely be controled with smart plugs. For the rest, your solution seems interesting. What did you use for temp probe? Also, I don't know what I can use as a pH probe.
This is the closest I have come to a automated system for tanks especially salt water. They have probes for temp, pH, etc.
I had check those sophisticated devices but they are very expensive. I was looking at a low cost solution for getting a warning about temp or pH through hubitat. My guess is that a DS18B20 would do as a temp probe but I don't know what to use for pH.
Anyone have an idea?
Yes, you can use the DS18B20 temp probe with a Fibaro Smart Implant. But I have no idea what could be used for pH, I was thinking of the same thing for our hot tub (pH and Bromine level) but never actually looked into it, so I will be following this closely.
To get the PH value: no clue.
The temperature I did with a Qubino Relais Z-Wave and a Qubino Temperature sensor.
The relais switches the hole power block when maintenance needs to be done. The individual power users (pump, air, lights etc) are connected with individual smart-plugs.
For what I gathered so far, the cheap pH probe from china are not meant to be left in the tank all the time or won't last more then a couple of weeks. The cheapest model I could find that can stay immerse cost around 50$C and should last 14 months. That said, it has a BNC connector. I don't know if it can be fitted to a Fibaro Smart Implant and if it would yeild an usable reading.
Does someone has electronic knowlege that can shed some light on this because I have none?
