Im using jimz at 1tbsp per gallon every over watering. Also been adding 1tbsp of BioAg FULPOWER every 3 waterings. I will be foliar spraying dr jimz bloom kaboom. I have although just top dressed with Organically Done ORGANIC BLOOM as i just flipped to flower
If you have a good fan and carbon filter exhausting already then you shouldnt need that extra fan blowing in so long as everything is functioning well.
Yes it probably will take a little longer . you dont want to get the soil SUPER WET either in early stages. You can gently dig around where you planted it to check if you wanted. Get some chicken soup for the soil from Dr. Jimz
The only thing i know for sure works after seeing a friend have this issue is eagle 20. Just be very careful applying it and do it right when your lights go out.