Thanks so much. I have someone starting on digging out the old pipe and removing the trees and roots in two weeks. He will make the pond deeper and remove the sediment. He's been building ponds in my area for 30 plus years. Not the cheapest, but probably one of the best, if not the best.
His advice, however, is to go with a conventional PVC system that draws water from the bottom. I think this is because he is less familiar with a siphon system and very "old school," which can be a good thing.
I realize it's my money, so I can dictate what I want, but despite all the good things I have read about siphon systems, I am just about convinced that what this guy will put it will be just as good, if not better than siphon system.
Any thoughts? Thanks.