If this is for a garden, don't water at night. You will get mold. You want to water early morning so things still dry up, but evaporation loss is minimized.

Also, deep watering less frequent is better than frequent spirits. You're after deep roots because as above so below. If you water deeper less frequently, it encourages deeper root growth VS shallow outward expansion.

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Thanks, if it changes anything this is for an enclosed greenhouse...

All the more reason not to water at night, don't worry about evaporation lost because it'll just make the humidity go up in the greenhouse, it can't just escape.