I simply observe them like you do your monitors. I observe behavior and change the variables if I experience problems. You know what causes your lizards stress by observing them and you make adjustments as needed as you have mentioned.

One of the areas of concern was one I had to adjust in racers. I work with Spilotes and am one of the only breeders that have bred them into F2 generation. I noticed the imported adults would not act like the ones raised under artificial light nor bask the same. When they were offered natural light they acted exactly the same.

The light was the only variable I had to change to get the results I was after so my question was an honest one and there is room for comments as I am always open to. I do not know what my reptiles see I can only imagine with dialog like this.
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"Life without risk is to merely exist."

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