Originally Posted by pumper9x9
The problem with those gauges is that if the walls of the tank are fouled the gauges will stop working. So you still have the same problem. I talked to an engineer at the company not a sales guy.
I do not know what the engineer said but I can tell you real life experience. I had problems with my black tank sensors in my 7 year old coach when I bought it. I tried all of the methods I could find. I was visiting Sequoyah national park in a campground at 4000 feet. When I left I poured 50 pounds of ice in the black tank and then drove down a mountain that was nothing but switchbacks back and forth for a few miles. That was the best job of cleaning and it lasted for about a week. At a tiffin rally where a Tiffin RV specialist was doing work on campers I saw him install the See Level II gauges. ( He had 30 orders to install them that week) He did not have time or any more units to install one for me. I watched how he installed them and when I got home the next week I ordered the system and installed it. Took me about an hour and a half ( took him about 30 min) That has been over a year ago. We lived in our MH for 5 months during the fall/ winter of 2013/2014 We have been living in our MH for a month now as well as several two and three week trips. Our gauges still read in 6 per cent increments from empty to FUll. I can tell if my tank is 30 per cent full or 18 per cent full or whatever. The only thing I have done after the installation is to flush my tank with clean water after I empty it and we use one of the more popular cleaner/ odor control chemicals about once a week. I don't know about anyone else but the See Level II system took tanks that did not work with the old sensors and it reads the levels and has for over a year.