I have found that every time I put a bottle into a decanter, the whiskey deteriorates very quickly. Though not kept in the dark, it isn't kept in sunlight either, nor in warm temperatures. But every time I do it, after several days the whiskey tastes as if it is watered down. Curious if anyone else has had similar experiences. Surprised me because I always thought that crystal decanters were supposed to store your finest whiskeys. I just don't get it!