What i could do to improve my closed enviroment ?

Bud rot is surely a risk when you have 80% in about 12 hours. Maybe open the tent door a couple times to bring down the humidity during night time too. Good luck

A dehumidifier for the lights off was the only thing that helped me. There is also cheaper methods with using chlorcalcium. That will take humidity down. You can often buy it in a box which you can then put in the tent over night :)

Hello 👏 It is very good that you monitor and control humidity in advance = this is the most necessary and one of the most important ones that can stop the correct flowering. The first thing that comes to mind = and how does your light turn on? In the afternoon, is your light turned on and turned off at night? If so, then it can try to change the regime and translate the plant by 12 hours = shift it by time. And it turns out that your box will be open at night and will be able to ventilate. In this case, the humidity can be slightly reduced, provided that = if the temperature does not rise in the afternoon of the light = above 28 degrees on the crown. And if everything already works for you, the plant sleeps at night and in the afternoon you turn on the box and turn on the light, then. Then the first of course that you need to do this is to turn on the drainage and lower the humidity with it) If he is not! THAT Then it is necessary to reduce the volume of the bosks, the volume of the entire bush - cutting out the excess leaves, large leaves. Yes! You will lose the number of crops! But - you will make your flowers a little less in volume and make the plant more ventilated = thus you will reduce the chances of catching mold, flowers will be more ventilated and get light and they will bloom much better = than if you retain the entire foliage without lowering the humidity from 80% By 80% with a lot of foliage = higher chance to catch mold 80% with a cut bush, with a smaller number of leaves = less chance to get mold Also put all your possible fans from the computer, just fans, make maximum blowing on flowering Good growth and good mood to you 🙌

There many factors like genetics some just more restistens like others, depens on terps, flavonoide and other chemical components. The amount of spores in the air or even the structure of the bud (flufffy/compact) I would say, its pretty hard to tell how high the chances are at all I told you already 20days ago that humidity will probably be a problem since the picture 3 weeks ago already showed 78% over your lamp