Eagle 20 is good stuff, works against Powdery Mildew, Botrytis (gray mold), and all sorts of other fungal diseases. It works with one application as a systemic fungicide that does not need reapplication constantly. That being said, it's truly safe for use in veg and not while flowering is occurring. Although if you still had 6 weeks to go, I wouldn't stress a light dose. Also, it's no joke. Wear gloves and cover every damn hole on your body while spraying it. Price wise, probably the best option all-around. One bottle purchased off Ebay for around $54 will last you until approximately two years after hell freezes over since you use so little per gallon or five.