I have a 25 liter canister on the balcony to water my plants. It is one of these Blumat water systems which only work with pressure.
We do not have water or electricity on the balcony and it just works well.
I would like to know the water level since leaks happen occasionally because the sun sometimes corrodes the plastic tubing and we need to replace them from time to time.
Is there ready to buy water level sensor with ziggbee2mqtt?
WiFi would also work but I worry about the battery life.