Help!! What's causing this?

[Mattrox01]

[Rwise]

Look at the under side of the leaf with at least a 30X lens for bugs.

[Mattrox01]

Yes spidermites... What works for you?

[Gluteous]

Neem is pretty foolproof. Some are down on it but it just works. You can also try some Dawn detergent with water. Several other options as well so check out the articles on this site. The key is to spray under the leaves, away from the lights, hit em hard every three days until they're gone.

[Rwise]

Neem oil may be ok for veg, dont use it on flowers (CVS/CHS), look it up, read it and make your own choices.
I use Captain Jacks or Spinosad, both are natural and claim to be safe up to harvest. I used the Captain Jacks after 2 treatments 3 days apart there is no sings of any mites left. I then did a third treatment (3 more days) with the Spinosad (also kills gnats).

[dilvish]

With the plant being that young I would opt for removing them by hand (gently rub the leaves ) then spread some food grade Diamotaceaous earth around the base of the pot as well as a layer in the topsoil. DE acts as a razor at the microscopic level and will deter them from coming back. Additionally you should ensure you have a fan blowing on the plant to discourage any leftover mites from laying eggs...the little suckers don't do well in a "wind".