It just sounds like you had the water spots before you applied Zaino and now they are sealed in. Try some quick detailer (Z6 or another) first. If that doesn't do it, then you may need to use some isoproply alcohol to remove Zaino, and the water spots.
Just a tip for next time: use Z6 before applying any Z coats. It increased the gloss and cleans up any leftover water or dirt.
