Hi to everyone who owns a U2. Can I ask what is the state of the copper sulphate capsule in your U2 presently? What colour is it after you had it for a couple of months?
I am asking because mine is turning blue (fairly blue) and it is only after 6 months approximately (from time of purchase). It could be the fact that living in the tropics where the humdity is high most of the time.
Anyone with similar experiences?