corrosion protection

I keep my 20g reef tank in my office / man cave and I am worried about the salt in the air rusting certain items in here. I have my gaming computer, a racing simulator, NAS Servers / network rack and all sorts of other things I would rather not corrode. Is it possible through air filtration or...

I have light mounts with aluminum bases that are close to the water and figure its probably a good idea to coat them with some sort of plastic or paint are there any recommendations ive seen things about krylon fusion is this a good option or should i use something else just want to be safe...