OK here he goes again...
If a pond is shallow enough for plants, is it deep enough for koi? If it is deep enough for koi, is it too deep for plants?
This goes back to the core of pond design.....is it a koi pond (designed to grow out large riverine carp) or a water garden (designed for plants and possibly small slow fish like goldies). Those are two very different purposes.
OK, I will shut up now.
