Shane
Members
I bought a garden hose
Just be sure to buy a marine or boat hose (they are always white or blue in color), which have an FDA approved liner material to make the water safe. Green "garden" hoses are often treated with chemicals to ensure they remain pliable and/or to counter mold and other potential obstructions and many contain lead. It must be labeled "drinking water safe."
Clear vinyl hose like Python uses can be purchased at any hardware/home repair store cheaply. The various fittings to turn one into a water changing hose are inexpensive and easy to add. Like Pat I have bleached mine a few times over the years to make it look new again, but I do not think the gunk that builds up is harmful.
-Shane