I use a dehumidifyer and air conditioning temp at canopy 78, room at 75 and I keep the humidity between 30 to 40%, this obviously jumps up a bit to 48% at the most right after watering. The only reason I considered using a fungicidal spray is the recommendation of a book, suggesting that even with low humidity buds retain and lock in moisture and are at risk for fungal infections and that preventative measures should be taken. I am assuming that spraying the buds directly is more of an asset than treating the soil, but this is very unfamiliar territory for me. So far this feeding I am using 1/4 tsp epson, pyrosol and Botanicare Pureblend Pro Bloom 1 oz. I am hesitant to use another product for this feeding and will wait to use the fungicide treatment till next watering. Hopefully with some more responses! Another quick question....I am due to leach soil on the next watering, is it possible to feed after leaching the soil or should it rest with just ph balanced water until the next feeding? The reason I ask is that my plants are crying out for phosphorus and potassium but I hate to over do it on this feeding due to the need to leach the soils.