Evertking I am not sure as you can really hand out confident advice on this subject. I've seen you give out some bad advice lately. Relax, get some more experience... you don't have to try to be an expert on your first grow.

Have you ever personally SEEN a mite larva? No. If you had, chances are you would not recognize it as such, as it resembles a smaller version of the adult, already hard to spot with the naked eye...

Use the Fungicde 3 product they sell at walmart and home deopt- it is neem oil and will protect your plants from many pests, including spider mites, which I doubt you have. Little white things could be eggs... yes, they do lay eggs under plant leaves... silvery... if you are wondering, haven't you thought to get a magnifying glass and try to figure out what they are?

This link might help.

spider mites