I have two vertical 20# propane tanks. Is there a device that will tell me when the tanks need re-filling? I really don't want to empty them just to know that they need to be re-filled.
Hot water poured on the tank shows you exactly how full it is with feel. I have two 25gal(100 lb) tanks I replace my 7gal(30#) tanks with for long stays.
I think I have as many propane tanks as I do generators.I really like my 10 gallon tank I use for the catalytic heater... With hot water guages are not necessary for my free standing tanks.