Lowes or Home Depot is the standard place. I'm not certain if you have one by you or not, but I am guessing you can order it online too.

Go to any big home improvement store or gardening center...and ask for irrigation tubing...will get you lots more than asking for just poly tubing...you'll get confused looks and all kinds of questions...which can get irritating...I mean, what does it matter what you're gonna use it for...by the time I found what I really needed, I was ready to beat someone with a piece of tubing...!!!

I went in and asked for 1/2 inch 100 psi irrigation tubing...and the connectors to go with...that should do it for you...!!!

Good luck...it's ever so much fun to wiggle...!!!

If you can't find it in the city, try calling more rural areas with farming. You can also order tubing online. Some Ace and Lowe's locations will let you special order it and then pick it up from the store.

You might also want to read this thread for more info:
hooping.tribe.net/thread/1b...f3eed56270