If you are going to make repairs on your water system....or remove the plug to drain/clean the system, the hose DOES stretch out. This makes the seal less than ideal when putting the plug back in. You'll have leaks. May as well have more hose on hand. The good news is that, though this is sold by the foot, it comes in ONE piece which is nice. I ordered 3' and got one 3' section. Now I can cut it to the length I need and still have more left for next time.
Thank you for the review, Jennifer. If needed you can also trim off the end of the hose, but we do sell extra hose by the foot - The Hatching Time Team