lol hell no for tap water and aero, ro or distilled mostly dist distilled water sets the standard for clean, and yeah i know what bleach is and how oxidizers work i just have no need them with inoculated res and air stones, anyways my concern was more for heavy metals and other than sodium hypochlorate, the ones they use to stabilize the products for shelve life, lol if you don't believe me try it yourself sometime i have continued to have crystal clear water,or i must be crazy then lol oh well tesla was crazy but everyone was in awe when he gave the world the ac grid,and then we forgot about him as we all do so well with everyone important to humanity and our future, and sure as hell never forget that fucking ugly stupid fucking snooky, im sure 10,000 brilliant peoples of our past would be doing barrel rolls in their fucking graves if they had the slightest idea of what were doing as a whole with our technology of today and absolutely no cohesiveness to improve. bejing's air pollution is at a costs of our need for cheap chinese shit don't get me wrong i love chinese shit, but nothing comes without a price, everything in life is a double edge sword all i can think is that sterilizing a res all the time could be more costly then to just put something in it to grow that does not hurt your plants and keeps other shit from growing natures doing the cleaning for me , lit. i make sure my res temp and room temp stay within certain range and i don't use my chambers as a res, been a miracle thus far hope it continues to impress me is all i can hope for, might sound crazy but i struggled with this organic or sterile bullshit forever in my mind and man just this seemed like a good idea to me and it works bad ass for cheap, ill show you what i do with it and yall be the judge i got the cleanest res i seen it looks like spring water and i've always had trouble arguing with positive results lol