From a chemistry point of view, CO2 + H2O (you will have vapour) + High pressure (3000 psi) will produce carbonic acid. You could have a corrosion rate in a steel tank of over 22 mm per year. However, you most likely have and aluminum tank and aluminum is relatively safe, but you still wouldn't want that residue. Yikes, please don't do it.
Edit, Doh, how did I miss DiverBouy's comments. Oh, and welcome to the board.
Edit, Doh, how did I miss DiverBouy's comments. Oh, and welcome to the board.