Thank you, Ted. I beleive I stored my stone somewhere, but If I can't find it, I'll contact you for a used one. I will do the T valve and divert the air to the stone in a shallower area of the pond to help keep some of the ice off for the obvious benefit to the fish population. One thing I learned about windmill aeartors. It's all about location. Mine has run pretty constantly since I got it, even on some otherwise calmer summer nights. If its in a wide open field away from the woods, like mine, you are going to see it run pretty constantly. And, I like my airstation. So, I'm happy.
