Found this little nugget.
If your plant is sitting in medium that is too wet during lights out, another process called “guttation” may takeover in place of “transpiration”, which only happens during lights on.
Transpiration is when a plant removes excess water from its roots and releases it as “vapor” through stomata located all over the plant, but mainly on the undersides of leaves.
Guttation is when a plant removes excess water from its roots and releases it as “droplets” through hydathodes located along leaf edges.
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I would water 1 hour after lights on , plant fully awake and functioning then : )
Guttation is deffo to be avoided especially in flower
Avoid watering before lights out
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“Breakfast is the most important meal of the day” so they say, starts up the metabolism.