Controlar humidade

Buy those "dryers" in the market, they usually come in packs of 3 at 180g for around 20 reais, they're anti-humidity and anti-mold, which helps. Another option is to get a bag of charcoal in the grow since charcoal absorbs moisture.

With coarse salt inside a bowl and with the lid perforated. It doesn't lower the humidity like a dehumidifier, but it helps if you don't have anything else.

Check out VPD charts for veg and flowering - with plenty of good airflow you might be able to ride VPD on a higher temp and humidity than is considered 'perfect' for the stage you are in and still get grand results.