Mold repellent!

My brother just showed me interesting little fact on some site, I don't know what it's called. Add 20 drops of Grape Fruit Seed Extract to 1 quart of water and spray it on your plant and it will keep Fungus at bay from attacking your plants.

good ventalation and air circulation is also a good repellent man.

Ya, that's true, but I don't do Indoor Growing. HPS light bulbs are too expensive. Besides outdoor growing seems to bring a Higher Yield. But more power to you Indoor Growers, you guys still got some killer bud.

Sulfur vaporizer can work/help too. (though good ventilation to prevent it in the first place is better)