[jfaberna]

Mudchief is right, nothing cleans the sensors and replacing them will only last for a few uses. SeeLevel seems to be the one people use who want to know the levels of their tanks accurately. I just know about how many showers/days we get and dump then.

A quick reference

1. the fresh water tank is full when water is coming out the vent.
2. The grey water tank is full when water is standing in the sink or shower
3. The black water tank is full when the toilet burps.
4. All tanks are empty right after dumping.
5. So those are the only 2 accurate data points.
6. Put black electrical tape over the LEDs on the level indicators so it won't bother you. worked for me