One thing i'm aware of is that some fans will not work at their best if they were not designed to use a fan controller in the first place, full power being what they were designed for, I'd have thought it would be fine none the less but it is something i've heard mentioned a bit. I decided to get up unreasonably early for the size of my headache, and now i've a whole day to kill, damned rain, what to do what to do. Blokes are looking right ready to throw down, time to read up a bit more on best way to do it wihtout accidentally seeding entire plant