Humidity problems

Besides more exhaust there's a few pointers: Buy a 2x 15L buckets. Drill holes on the upper half of the bucket. Fill the bottom half with cat litter and fill the upper half with coal. It will suck much humidity. Best way to fight humidity inside the grow tent is by fighting it in the space outside too. If the air going in is drier you'll manage to drop humidity. There's many plants to have indoors in our houses that regulate humidity. You almost don't need to water them as they get almost everything from the air. Also add a 16"fan to the room outside and allow for more air circulation where you have you're tent.