so John, are you saying that if you use R/O water for say the water bowl in a RETF tank that you need to add stuff to the water? I'm thinking about getting a 4 stage R/O water system because I like to drink alot of water personally and would be cheaper in the long run and better than my little old brita plus R/O water at home would save me from having to buy distilled at the grocrery for my mistking system, but if i use that R/O water in the water dish for the RETF i need to add something to it like R/o-rite?