Humidity control

Exhaust out should always be pushing out slightly more air than you are bringing in. This creates a negative pressure which will bend the tent in slightly, you don't want it too strong, 60-65% is ok for days bit at night you need to deal with it or you are crippling your respiration dramatically. Generally you want dehumidifiers keeping your lung room at desired rh. 50%rg for example, now you know the air coming out of the tent is 60, 70+ rh and fresh air intake is bringing in 50%rh. Having the exhaust fan linked to your rh, as the plant spits out more water all night the fans keep coming on to keep water moving. Negative pressure setup allows for 20-30% rh control with nothing but fan alone. But you need to control your lung room. . If your ambient rh indoors is 60+ then your fcuked no matter what you do. Gluck.

Show us this dehumifi bla bla this machine... and when you turn on, close box... i have this for 200 euro and work it good with 8 plants in the box... and when you use this put 50% on.

That % of humidity is not ideal, but it isn’t bad either. Keep a good air exchange and air flow inside the tent and your buds will be fine.

Go to 18/6 for a start.............24/0 is so wrong for plants. There are certain metabolic processes that only occur during the dark period..........without a dark period your plants will have a messed up metabolism and any plant with a messed up metabolism will never perform to the best of its potential! Otherwise, add another oscillating fan to increase air exchange. Have it blowing over the very top of the plants, no need to have it blowing directly on them.

i cant believe, maybe you havent turned it on, ussually they can work as humidifier too. my small 3-4 liters delongi brought 120x240 tent with 5 huge plants from 99-80 to 50-55 RH. i grew most of my grows with humidity 60-70 during flower, good air movement inside and air echange prevented all mold and other issues. worst case, if nothing helps , clean bottoms first, if that dont help, start doing selective defoliation ( 2-3 leaves off a plant daily, take those who shade most, try not to touch most developed top colas leaves, anything below them can go if needed ).

increase air exchange and vent outside.

Defoliate, and get some better airflow. Does your tent have those vents at the bottom? Have your exhaust fan set to overshoot so it’s runs harder.