Nice to know there is no floating device to worry about. It was just bugging me when it showed full, when I knew it wasn't.
Yup that Geo-Method was what I did plus a good couple of flushes on a 40 gal tank.
I was surprised at how the softer worked during the over night soak. Good to know!!
I looks at those SEELevel systems. Nice but my tanks are buried under our trailer and would be hard to fit I think.. Plus I got other things I need to do to the camper.
Would like to get a shade cover for our slide out... that will be $400+.
Thanks for the comments ALL.