I looked up Cattleya Nano Rubies. It's 50% Cattleya (Sophronitis) wittigiana, 25% Cattleya (Laelia) acuensis and 25% Cattleya (Laelia) milleri. It would probably prefer being quite moist during warm weather but quite dry during cool weather. I would suggest enclosing the two smaller pieces to get the humidity much higher.
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