I tried the garden hose it drooped straight down both sides of the 4" conduit. Now it was in full sunlight, but the temps were in the 60s. I think I'm going to bite the bullet and actually spend $ on some stiff plastic tubing to add on.
The 1/2" and 3/4" black Poly tubing is dirt cheap! Do yourself a favor and also spend the $5-$10 on a PVC tubing razor cutter like this
Poly/PVC Cutter Also, expanding foam will make the garden hose float straight up unless you fill the ENTIRE hose to the base and shape the hose while you let the foam set up.
