Thanks for the advice. It appears that the machine is in my budget if the dealer ballpark is accurate. If the plants do not hurt the fish, I can deal with the inconvenience. I will try for a deep (8+ feet - central hole) with a shallower shelf around the outer edge for safety. The biggest concern will be droughts where the artesian well level drops. Pond depth will depend on the machine and my ability.

Last edited by RAH; 10/03/15 07:23 PM.