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Drinking water has other shit added to make it taste better. Sometimes the sodium content is dangerously high for cannabis. Plus you don't know if it has correct calcium and magnesium levels. Switch to tap water unless you have a compelling reason not to.
Stop misting, because what you may be inadvertently doing is called 'reverse foliar feeding'- you can FEED a plant nutes through its leaves... did you know you can also TAKE THEM AWAY?

Get on a program of correct pH for feeding, between 6.3 and 6.8, with correct nutes, and a known calcium source, be it tap water or addition of calmag plus to distilled water. And no more drinking water; save that for yourself.