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.
A lot of good advice. Here is a photo that I just took. It looks like with the lever to the right a little red starts to show up. I did move move the lever to the left but the indicator stays in the green. It looks like I have some time before I need to fill the tank on the right in the photo since we are only using propane for the refrigerator when traveling and some outdoor cooking on the grill using the external tap.