My fiance is having a heart attack at me that I want to go so far as to put a plumbed in system in to a wall between two rooms. No separate fish room, no structural changes, and the most elaborate remote built in would be a storage tank to hold R/O water in the basement right below the tank.
I don't even want to think what a system like that would do to the re-sale value of your home, but I guess if you plan on growing old and there it really doesn't matter. My little built in can be removed by simply pulling out the tank and putting up a single stretch of drywall... that thing would probably cost 10's of thousands of dollars just to remove.
However, if money truly was 'no issue', I wouldn't think twice about doing the exact same thing, but with an even bigger display (20feet X 5feet baby!)
