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

Fishhead,

I am in the process of replacing my overflow drain with a bottom draw siphon system and adding an emergency spillway. My contractor is recommending to dig out the old drain pipe and install the new system in a different location. My current drain pipe is rusted and is no longer usable. Another option I came up with was sealing the old pipe (versus digging it up) with concrete; however, this was more expensive than just digging up the old pipe since it would take special equipment to push in the concrete + cost of material. Another issue with packing the old pipe is unseen air pockets, although these impact of these was minimal.

In both cases the pond needs to be drained down to the level of the old pipe.

I’m a beginner at this, so there is plenty of room for me to learn, but, I will let you know how it goes.