I've been using a hose on my tanks, works just fine. Some are marked as not drinking water safe, you may want to look at an rv or camping shop for drinking water safe hose.
I used one that was not drinking water safe, it worked fine. Only thing I noticed was that you had to let the water run for a little while to get rid of the "hose" smell to the water. The only reason I switched was I was driving past an rv shop one day, decided to check on prices. Hose was cheap, so i bought a couple. Hasn't made any difference, fish are still the same healthy fish.
Tolak