Lucian, I've never figured out the reason for temperature drop at night. I've seen many books emphasize its importance, but I haven't seen a satisfactory explanation why it is beneficial. Does anyone know about this? One reason I could think is that relative humidity at night is actually the important part. Lower temp at night will cause the RH to go up. CAM plants like Phals are likely to do gas exchange during the night. So they may be able to open their stomata more freely if RH is high at night. Anyway, I hope your plants like the new location!
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