Re: brand new nammor hose is... RUSTING!
it's definitely not the water. i cleaned it in my kitchen sink, which i have been using for close to 3 years now. i was watching the water come out of the hose too as i heard that some residue can come out during the first cleaning, but the water was clear. the hose was fine after i washed it too. only the next morning after the water had been lying inside the hose evaporating did i see the rust.
i looked inside my hose and there is a metal coil in there, so there is something very fishy going on with nammor. i was very surprised to see a metal coil, as i thought washable hoses don't have these.
don't suppose you could post a picture?