JKB,

I was going to go with 2 inch hose or PVC from the drain to the bulkhead in the bottom of the clarifier as VanGorder felt the 2 inch pipe worked the best for the u tube siphon. Is it as crucial with the drain and upflow to the clarifier?

I'm not crazy about what AES charges for a 2 inch bulkhead fitting! Maybe I can find a cheaper source on line?

If pigs could fly bacon would be harder to come by and there would be a lot of damaged trees.