My koi fish keep digging up my water lilies. What can I do to protect my plants?

Koi are pretty notorious for digging up water lilies and other plants. It can be a never ending battle depending on how aggressive your koi are, but to offer some suggestions you can put your water lilies in a Submerged Plant and Pump Protector Net or a Floating Plant Protector Net. In short, these nets go around the pot and encapsulates the base of the plant in the pot while creating a "screen wall" that keeps the fish from digging them up.  more