Just my thoughts on this. If you ever have problems with this you will wish you had went the larger gauge. You could check at your local scrap yard if you have one. They usually have some bigger pipe sitting around for sale. Better price than brand new. Take some pictures of it along the way please.

The people who say I can't do it can just sit the @^#% down and watch me. Friends call me Rusto I also subscribe to pond boss mag. http://forums.pondboss.com/ubbthreads.php?ubb=showflat&Number=504716#Post504716