Originally Posted by TomK2
I think that if you go to the hardware store, you need to find some slightly rigid tubing that you can cut or is cut, so that the tubing can go inside it. You know that ridged black tubing meant to bundle electrical wires in for auto's? That might work. Basically you need to support the tubing in the bends to prevent kinking. Some sort of flex hose to make the tubing's bend a little more gradual.
I wish I knew the name of the stuff.
Convoluted tubing. It is not that rigid, very flexible and it is slit to allow the wires to enter it.
If it is on a straight section that is just kinking due to the way it was stored in the box then you need to run some very hot water through it to really soften up the vinyl. Then squeeze the kinked spot into the original shap and hold it. Now run some cold water through the tubing and this will harden the vinyl and presto, kinking memory deleted.
If you are draping the tubing over the tank rim the only cure would be the proper fitting like this http://www.bigalsonline.com/catalog/...839&pcid1=1971