Has anyone been involved in setting up a temperature/humidity-controlled environment for storing audiocassettes and CDs?

I am trying to set up an audio archive in a relatively underfunded and poorly housed program. In this theoretical archive, we will have roughly 5000 CDs, a few hundred cassette tapes, VHS videotapes, digital video tapes...and MAYbe reel-to-reels. We've got a basement facility with cinderblock walls, standard ac/heat and exposed pipes.

I know I'm going to have to find grants or sell my internal organs to get a decently housed archive going, so I'd like to know what I'm getting myself into. 


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