TamJam69
Well it does indeed look like the Red Spider Mite. Yes they can infest the Soil through riding in/on the lower stem going into the soil. If you never believed anything believe this" If you've got mites",- harmless as they may seem at the moment, be quick and efficient on getting rid of them and keeping them at bay. For as the Sun raises tomorrow, they will grow and infest so damn fast taking your crop right under you. The only efficient way we've ever been able to get rid of them" at least temporaily" is the get a mid-sized spray bottle and add three small drops of Ivory dishSoap and then fill with water. With all lights turned off, but a small light to see with, Shake gently, then spray the living daylights out of them, especially under the leaves and be sure to get the whole plant. Then let the plants dry for a couple hours, before turning back on the lights. This method will kill about 90% or so of the mites. And when bad , you will have to do this probaly every week or so.
I know of no other effective way of totally eliminating mites without hurting the plant. Don't be tempted to using any more dishsoap then 3 or 4 drops as you may temperaly get rid of all mites you can see with you eyes, but the plants and or buds may dry out if you use anymore, and the mites will be back ,just a day or two later. As it is, if you turn your lights on too soon, you could end up with a few curls up leaves.
Neem oil, Sprays, Lady bugs, etc.... have thier place (but mainly are waste of time and money). However, you can waste either on whatever tickles your fancy. Some people just need to try something else ???.... or just don't believe anybody for anything, and on the whole, thats not always bad advice.
Wish you well on your grow !!