Pond Boss Forums POND CONSTRUCTION Building a dam Can I convert conventional into bottom draw

I have no experience with this, but am willing to give a "Plumber's Son" (Grandson, too) opinion. I believe it should work IF you can get a good seal between the existing drain pipe and the new descending pipe.

Two things I would worry about: 1) reducing the outflow too much with resulting increase in water backing up during heavy rains if you have to use a smaller pipe, and 2) making sure the bottom of the descending pipe is clear/not stuck in or sucking mud.