Black water tank

[camper brown]

What us the white shelf in the tank for. Seems to catch and hold waste sometimes plugging toilet.

[Fire_Instructor]

There shouldn't be any "shelf" the tank should be smooth, and the bottom should gently slope to the discharge port....

[wags999]

Some tanks so have a "partition" to keep liquids from sloshing when traveling. Perhaps that is what your "seeing". I assume with a camera?

[camper brown]

Whitehawk 23mrb. Can see straight down toilet hole. No camera needed beccause it comes across hole. Has caused one clog so now i watch close.

[camper brown]

Csn be seen looking down toilet hole. Dealer doesn't have any comment. Whitehawk 23mbh

[TCNashville]

Did you try and stick something down there and try and move it? It could be some sort of construction debris. When we purchased our unit, I looked down the toilet and there were 2 pieces of trim in there about 10" long. It was a b*tch getting them out. As stated above, there shouldn't be anything down there.

[Hohenwald48]

All manner of things seem to find their way into holding tanks as they make their way thru the factories. When you look down thru the toilet you should see a 3" round hole all the way to the bottom of the tank (provided the tank is empty). Anything else doesn't belong there.