I set up my aquaponic system and used a liquid agent to remove the chloramine in my water. Someone had mentioned to me that, if you have edible fish you should not use this liquid agent. Is this true? I have guppies so I will not be eating my fish. I read the entire bottle, it does not say anywhere that it should not be used for edible fish. It also says "Non-toxic to humans, pets and aquatic lif…