Does sound strange to me@mattc1 sorry for the late response, busy weekend. i left the liquids for a few days, ended up randomly putting the vimto in my tank when i had about 25% of another liquid left in there and suddenly the vimto flavour was there however by the time it came to refilling after about an hour, it was back to having no taste whatsoever. i really don't know what to make of it, maybe a bad mix?