<span class="link_user">@Experimentgreen</span>, EM-1 (Effective microorganisms) is a very famous product it's based on lactobacillus serum, it's like a probiotic for soil and if done as foliar it can kill mold spores at the beginning of flowering, that's what later will transform into bod rot. It's amazing bro and I heard it's safe even if drink it from the bottle, those kind of product I love to spray my plants with.
<span class="link_user">@Experimentgreen</span>, I already use & EM-1 in veg & first 2~3 weeks in flower, last year I had big issues with mold, so I purchased the EM-1 and it worked, for extra protection I'm planning to integrate the General Hydroponics Defguard, so I will have 2 layers of protection from mold.
+ I also purchased a dehumidifier for the flowering room now.