Thanks for the suggestions. Based on where we are building the pond I think I will have the 15' difference (if not more). Should I add something to assist in the vacuum or after filling with water I coujld put the shop vac over the vent tube to get the air out of the tube and use a value in the vent tube to seal it off.
I thought I posted this this afternoon. For some reason it isn't here. This is my plan for the siphon systemm, any commnets
FYI does anyone know how to post pdfs so they could be used enstead of this jpg, or do someone have a conversion tool for jpgs that don't add a watermark.
