Aquarium Pharmaceuticals Tap Water Conditioner.
"Directions:
To remove chlorine and detoxify heavy metals: Add 29 drops (1 ml) per 20 U.S. gallons (75.7 L) of tap water being treated.
To detoxify chloramines (break the chlormaine bond): Add 29 drops 1 (ml) per 5 U.S. gallons (18.9 L) of tap water." (barrowed the directions off petsmart.com)
