This is what I have found as options so far. It seems that neem oil can be ineffective against spider mites, but some say it works fine. Acephate 75 sounds like a better route to go to control them, but I'm not sure what the mixture amount would be. I assume the amount would depend on the brand (the only one I am finding is Hi-yield fire ant control with acephate). I also have found using CO2 to control them which seems like a good route to go (I would sublime some dry ice, distribute it throughout the tank and seal it up after), and possibly more effective combined with the acephate 75. If anyone has any other suggestions that would be great as well.
0924142028b by chevyguy8893, on Flickr