Utter Chaos looks good. In my tank, they have best color and more vivid speckles when up at high around 250+ par levels. So if colors start to dull and the speckles less vivid, movem' on up.
Good to know. I figured I'd give them a month or so and see what they do. If I notice that they are starting to fade, I have lots of spots up higher I can move them to.