Rene T
Site Team
Just like most people, the level indicator for the black tank in my RV is not accurate at all. What I've found in my situation is that when it gets close to being full, whenever I flush there seems to be a bubble which comes up by the water as it's dropping into the tank. Also the sound is a little different. I can't see the level in the tank because I have two 45 degree elbows it flows through before it drops into the tank. This may be helpful for some other people. We can go about 9 days before we need to dump.