I'm still "playing" with my reef-pi, even if it is running on a real fish tank I have to dismiss.
I use on “old” Samsung Galaxy Tab upon my Fish tank.
I also use Chrome and I reach my reef-pi server just with The IP.
The display is always on so that I can see data from my Adafruit’s profile Dashboard.
This is my configuration for the Raspberry:
Smart Plug WiFi --> Power Adapter --> Power Bank --> Raspberry
On the Raspberry is runnung a VPN server so that I can easily connect it from the outside.
On the tablet I have installed TeamViewer and the app to control the smart plug where is connected the Raspberry and the app to control the TP-Link smart plugs that control temperature and (later) the ph.
In case of problem I can access my lan in any way.
Next step is to connect my router to an UPS.... and/or put a SIM in the tablet.