Hey Zokkufu, this is my first grow with using 400 watt setup. I had a problem with Mites. I bought Liquid Ladybug and it seemed to work but it is real expensive stuff. It was $25 for a squirt bottle and it didnt take long to run out but then I went to Lowe's and bought some Neem Oil that was only $10 and it wasconcentrated so you can mix up several gallons of it & I was able to eradicate all of them. You don't have to go to a Grow Store where they sell over priced products. If you need anything I would go to Ebay first. I was able to buy a 400 Watt Digital Ballast that was dimmable, 400 Watt Bulb, and a Rachet Pulley so you can raise and lower your hood without a problem. I paid $120 for everything. I would suggest that you research before you buy. You want to clean the area around your grow and use the Neem to get rid of the mites. Neem Oil also kill eggs and it prevents them from reproducing.