I've been reading a lot threads on various places about these aquarium water chillers, this one seems to be the most recent, so I thought it would be a good place to post a question. Is there any reason that one couldn't use a 3:1 water-to-glycol solution to pump through the chiller/cooling coils in a set up like this? It seems as though this could improve chilling efficiency and microbial stability of the chilling solution.