WyldFya;1024182; said:A few hoses are made of PVC, but most are made of reinforced vinyl. Especially the Ace brand hoses.
I know its not exactly a published study or anything but its all i can come up with right now, I have a busy day moving fish ahead of me and need to get started!!
7/12/2007
http://abcnews.go.com/GMA/Consumer/story?id=3369894&page=1
Either way, whether its a PVC hose, vinyl hose, or just a bucket, its still a good practice to clear any standing water before using it to fill your tank, there is all kinds of unwanted things that could be in there.