All ActivityMost RecentMost LikesSolutionsRe: Grey water tank won't drain completelyThanks for the quick replies, everyone. I'm never sure of anything, when it comes to the tank senors. Lol My impression is, it takes less time to drain than it used to. It's like, "Wow. Done already?" That, plus it only takes a day to reach Full again (normal water usage), rather than the 3 days it used to take, after emptying the tank. It's a 52 gallon tank. Just doesn't make sense. I've left the valve open for several days, and it never goes below 2/3rds full. It doesn't go back to full until I close the valve. I'm hoping the next time we drive it, maybe something will work itself loose and the problem will go away.Grey water tank won't drain completelyNew RVer here. My Grey water tank will only empty down to the 2/3rd level. Not completely clogged, obviously, but why would it stop draining at that point? I don't think it's a sensor issue because it does seem to stop short of completely emptying, plus it doesn't take long to fill back up to the full mark.Solved