[pHaestus]

water wetter in recommended doses for normal users is fine. BillA and myself (and probably others) have seen white gunk buildup when using water wetter in test systems though. I personally believe this is because of the higher than normal temperatures that our water is sometimes subjected to. Antifreeze w/ additives and water wetter all have silicates and molybdnates and such in them that can start to form solids and screw things up above 35C or so. If you're going to have problems with high water temps because you're passively cooling the water, because you're running big pelts, or because you're testing radiators with a lab water bath or something then I'd avoid it. Otherwise it's probably "ok".