if it is spider mites that you have, you should consider spraying the leaves every other night with water... they hate moisture.. you should also consider looking through the threads.. there are some pretty simple clove/garlic/red pepper home made sprays that you can use on your plants... It is very difficult to win the battle against mites.. but you if you are very aggressive you can at least save your plant and it will still give a great yield!!

It is also very iportant top be most aggressive during the vegging cycle. cause once the buds start growing (flowering stage) you wont beable to spray as much.. spraying buds is bad news!!!!!

love