Alright without getting bashed....I have recently filled my 220 up with tap water.. and was wondering if I hook up A RO/DI system to my tank and let it run for a few days with this resolve "tap water" situation? I have never owned or operated a ro/di system but I see that theres a "bad water" line that drains. Does this have to drain outside the tank or can I have it run back into the tank eventually becoming perfect water?