I'm nearing the final stages of constructing my first big pond. I was using lots of instructions from Nelson's Water Garden Nursery which all show rigid pipes, so I was planning on that. But I see now that's not at all a requirement. I see corrugated plastic, smooth plastic, etc. Doesn't corrugated plastic cause a lot of friction? Do we know for sure all of these are nontoxic? Can anyone direct me to a good source for flexible pipe?
Thanks!!!
Thanks!!!