Humidity Problems

So, I don't know why, I've been growing in the same area the entire time and I've never had this problem before. My lights off humidity is going too damn high, it was at fucking 65% the other day and my d\h was on forty five. I have no clue how that's even possible.

I did add an extra intake that may be bringing in moist air from outside, but I live in an area that is not humid at all. I was thinking my ventilation may be pulling the air out before the water is taken out of it by the d\h and then more moist air is replacing it? I'm confused.

Also just gave em a water and the humidity is 98%... which is damn scary for me because I've found a few spots of mildew through this grow. I am only four days into 12.12 so I'm not losing a ton of sleep over it, but I'd like to get it under control. Any tips?

P.s No the d\h is not getting full, I'm keeping a close on eye on it

Place a bucket full of silica gel in the room

Cool, I will look into that. For now, I'm worried about my r\h being super high tomorrow because it's around 88% because I just watered em. Hopefully alot of that will transpire over the night, but I really don't want it above sixty tomorrow otherwise I'm likely to find more mildew. I don't understand why the d\h isn't working properly. It's not spilling any coolant or anything liket hat so I have to assume its working correctly?

I'm measuring it from the canopy which is what I've always done in the past as this is the humdity the leaves are receiving. Just turned the d\h on lights on (never had to do this) and it's down to 82...still wayyy too high

Is silica gel really effective?i just bought an eva dry unit off ebay it uses silica gel and apparently you can "recharge" it somehow.it was 25$ on ebay and is used for rvs and closets lol it should work what do you guys think it says 300sq ft