Originally Posted by cnack72
I have a black tank flush on my Surveyor sport. How long should I let the water run.
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It really depends on how full it was before dumping. The biggest problem it tolit paper it sticks to the side. I have the clear tube as suggested. I have waited to get clear water, but decided to leave it going longer just to see maybe 20 minutes later I saw more TP and brown coming out. So now I learned to flush everytime, but once in awhile do it a little longer to get a good cleaning. I only suggest this at your site. Being at a dump station you would be holding up the line for people to use which would be rude IMO.