Treeplanter
I needed to get back with you before you get corrupted, We have a few people that will tell you a story and think its funny,(AND SOMETIMES THEY ARE)
The pipe needs to be 3or 4 feet off the bottom, you can also tie it down away from the bank pointed toward the middle of the pond.
As far help you can get hold of me almost any time at
940-736-5333 cell
or 800-882-3478 home office
I will be glad to walk you or your contractor threw the process.
Otto