I use that stuff but what i do is i put it in a used plastic water bottle i fill up the bottle and put a few drops and leave it over night that way it has time to take out the bad stuff and this works great i used to use just tap water and at the end of the day there would be slime at the bottom of the dish now there isnt so it does something and it seems like my BP's soak more in this water then the tap water and i see them drinking all the time.