I tried searching on here for my answer but there are too many results to look through so I will ask (forgive me is it has been asked before).

Since I do not like the newly redesigned Aquatainer vent valve I've been looking at the light blue 6.5 gallon Blitz water containers to use for water storage. I have found the prices run from about $10 up to $22 each. I can buy the red 5 gallon gas cans on sale locally for less than $5 each. From what I can tell the only difference is the color and size. Is there anything worng with me using the red gas cans for watter storage as long as I clearly label them as water? I am planning on buying a lot of them for storage at multiple sites so I'm trying not to spend a fortune, plus I want the containers to be a managable size for my wife and daughters.