it is 20x20x3ft deep how high can the canopy be off the pond? like enough for me to woalk under it or really low?How big is the pond, Herons are a real problem because once they find a food source they keep coming back and can feed to about 30-36" deep. If the pond is small enough us bamboo poles and garden shade netting to create a raised pavilion over it, They can be attractive and have the added benifit of reducing temperature swings and slowing algae growth.Very few herons will go under canopies like that.


But like guppy said, one they find your pond they keep coming back. So you should do something fairly quick cause the can clean out your pond pretty fast.