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brent I hate to tell you this but I have unfortunately had too much experience in previous years with Broad mites and if you are in Cali or CO or that is where you got your clones then its highly possible that they are infested. Old leaves doing the taco and new growth coming out almost dead are sure signs that you could be infested. In order to be sure if it is broads you will need a scope of at least 40x and they will be on the underside towards the center of the leaf. If so I would scrap the project and start over, you will also want to heat treat your room, and all tools and clothing. Heat treat I mean get temps to 120 in your grow room for 3 hours or more and cook everything out, it helped me tremendously. If you are trying to salvage and it is in fact broads the only things that have worked for me are caps bennies and
avid, but if what you have is broads then you are rather infested and will need to use something strong, most likely
avid. Again, this is only if you see the broads and are sure, but it seems your are eliminating a lot of other possibilities.