They like high humidity, except for when they're flowering. During the flowering phase, humidity can get your buds moldy. Since they're still vegetating, high humidity is great!I took the ponytails off, the room is at 28º C and 70 - 78% RH humidity is very high!! is this a problem now?
The spots look like magnesium deficiency to me. Just mix magnesium salt (you can find it in pharmacies) with water and spray the plants with spots a couple of times a week.
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