Chlorine/ Chloramine
Unless you have a private well, the chances are that your local municipality adds chlorine or chloramine to the tap water to make it safe for humans to drink. Unfortunately, both of these substances are toxic to fish and invertebrates.
Chloramine is more often used today than chlorine because it is more stable. A few water departments still use chlorine, but they can change at any time, and they do not have to notify you when the charge is made. Since chloramine is harder to deal with, and the treatment with chloramine will also effectively treat chlorine, we will discuss the treatment of chloramine.
Commercial chloramine neutralizers are widely available, usually in the form of bottled liquid. Look for a product that specifically states that it will neutralize chloramine, not just chlorine. I strongly suggest that you...