I'm looking at the cost of getting water from Kings and Wal-mart at .88 a gal. Plus now that I have a sweet cabinet, I could fit a RO system in there. My question is what is the difference? There are "aquariumist" systems and then there is the Average Joe systems at Home Depot. Getting an Average Joe system would be great in my mind as, if something happens to it I just drive 2 miles down the road, vs. having to go to the LFS. Is there a special canister of puppy and newborn baby hair that Saltwater needs to be filtered through? Illuminate me.