Alpine Delight CBD

Experimented with keeping humidity down during dark phase as too high. Need extractor on for smell/airflow, but noticed it continues to suck in outside humid air. (Non-electric) Dehumidifier is in place from previous week which helps but still needs something else to drop the humidity. When lights go on the humidity drops dramatically. Consider a heater. Kept lights on for 24hrs at back 1/2 of week until appropriate solution in place. All other day time parameters are ok. Can see the effect if overwatering from the previous weeks, have maintained a regular pattern but with less volume each time.