I know that having a water cooling systems water source exposed to air is not a good think as it can lead to floaties in the water and bubbles and whatnot. Though, what i have never been sure about though is if you continously run oxygen (the same oxygen recycled) will it lead to a large amount of rust within the WC system, or cause bubbles or anything like that? Remember, this will be the same air run though the system over and over, so it will not be exposed to anything new after the first few hours or so.
Any Water Cooling buffs that can give me any info would be much appreciated.