I was going to use ABS for my bottom drain, but each coupling is another
chance for a leak and I need about 3 joins. Plus the couplings will make the
pipe that much bigger, something I don't need for my tunneling project. But
I was on the Home Depot site and I saw this flexible PVC. It's funny looking
stuff, kinda looks like non kink hose with the ridges filled in. It looks
different than the standard sprinkler PVC I've seen. I checked a couple of
pond sites and one carries the funny looking stuff and the other looks more
like the standard PVC I'm used too. But it's a little hard to tell from the
blurry pictures.

So does the funny stuff exist or is it my imagination? How does it compare
to the standard flexible PVC?