This just my solution, but it works for me. I work in the marine electronics and comm. industry, and this is what we do. I've done it to the last three comps. I've built, and it works great...with zero water.
We use small neoprene closed foam a/c insulation (not split type, the slide over type.) Use the a/c waterproof tape that's available where they sell the foam. Then add a unit (trade name "golden rod") that is a very small heater rod that is used to keep the moisture lever to near zero in the electronics boxes. They cost about $20.00 U.S. They run 24/7, draw about 4-6 watts and can be unplugged when not in use if you want. They case temp. is a little higher than room temp., but that's why I water cool the comps. anyways, so it makes no difference. They usually last for four or five years, and require no upkeep.
Well, that's my solution to the water problem. Thanks
