TenOC wrote:
I have been "camped" at the same site for 2 years now. I leave the black and gray water vales open ALL THE TIME. You only need to make sure that there is water in the toilet before use and when you flush you use extra water. I have NEVER had a pyramid.
Have you gotten inside to look? :B
My bet is there IS a nice thick layer of that stuff on the bottom of your tank. My guess, 2 years...1/2 your tank is sediment. Poop needs to 'float' in water to be able to exit. The amount of water from a flush does not fill the entire bottom of the tank to float the stuff out the opening. It's just sitting there and when the sediment gets high enough 'some' of it exits!