"mite" have been (Anne)

A couple of weeks ago, all of my plants were doing really well: they all had new growth, and I had used each of the herbs at least once in a recipe. Then I started to notice small brownish spots on the cilantro and within a couple of days it had wilted, and the roots molded. I did a little research on cilantro and discovered that it has a very short life span (some sources said only 3 weeks) and so I figured it must have just died from old age. However, soon after this I started seeing the same brownish spots on my basil and lettuce. Then I got a bit worried and did a little investigation. I found some silky strands that looked like spider webbing and some tiny bugs that look like orange chiggers on a few of the leaves. I did a little more research and found out that spider mites were eating my plants. They were too small for me to get a good picture of them but here's Wikipedia's photo:

They lay their eggs on the underside of leaves so that when they hatch, the babies can eat the leaves. The best solution I could find (besides predatory mites that can cause problems of their own) was humidity: evidently spider mites can't stand humidity. So I've been misting the plants at least three times a day but the lettuce has died and the basil and thyme are in really bad shape. The rosemary doesn't look great but I've still been using it and the chives and parsley look like they'll pull through. I've decided to order some worm castings to try and keep the mites away and add some nutrients for the plants. Here is the websites I'm ordering them from:
http://www.organicwormdirt.com/
I also bought a "guaranteed to grow" kit with basil, rosemary and thyme in it. The basil and chives have sprouted but no sign of the rosemary. I'm going to get a strawberry and a sage plant to replace the cilantro and lettuce in the 20gal terrarium.
Keep your fingers crossed for me!