Edison, If your water isn't too hard to start with (and I know that yours is not) the waste water will be fine for most fish that tolerate harder water. Mike Wise "Edison C. Yap" wrote: > Can the waste water coming from RO unit still be used for other fishes e.g. > Koi or Goldfish? > > Thanks, > > Edison > Philippines > > ------------------------------------------------------------------------- > This is the apistogramma mailing list, apisto@listbox.com. > For instructions on how to subscribe or unsubscribe or get help, > email apisto-request@listbox.com. > Search http://altavista.digital.com for "Apistogramma Mailing List Archives"! ------------------------------------------------------------------------- This is the apistogramma mailing list, apisto@listbox.com. For instructions on how to subscribe or unsubscribe or get help, email apisto-request@listbox.com. Search http://altavista.digital.com for "Apistogramma Mailing List Archives"!