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I have seen those before, and I got the impression that some of the salt water gets into the tank also. I am thinking of something like one of those commercial coffee machines that is hooked up to a water source. You load it with whole beans and through the magic little elves inside brew a great cup of coffee on demand. Think about the retail potential! Customers put in a quarter, hold their cup under the spigot and out runs a day's supply of bbs.