Originally Posted by DCoul
I know how to measure it. I’m looking for what to do after measuring. If anything.
Not sure if that was for me. I should have been clearer...mine ended less than a half tennisball from the bottom of the tank and I never had an issue with the tank. If I were you, I wouldn't change anything unless problems started. If problems were to start, I'd start with adding more water before I considered raising the tube. In my experience, poop pyramids are caused by insufficient water and not tubes the end too close to the bottom of the tank.
Hope that helps.