Hikari Ultimate Complete Water Conditioner. Ultimate® is the world's first full-function water conditioner. Everything you need to maintain a superior environment for your aquatic pets is in one bottle. For new setups Ultimate® instantly "ages" water allowing you to enjoy your pets in action quicker without fear of the negative impact of toxic chloramine, ammonia, chlorine, heavy metals or nitrite. Ultimate® can also reduce the amount of time required for your tank to cycle. Simply The Finest Water Conditioner We Can Produce! Destroys chloramines Removes ammonia and chlorine Detoxifies nitrite and heavy metals (including copper) Adds essential electrolytes Boosts alkalinity Replaces skin-slime coat Reduces water quality induced stress Instantly "ages" water Excellent for use when moving fish Available in: 16 oz. (473mL) (Treats 960 gal ~ 3,633L) 1 Gal (3.8L) (Treats 7,680 gal ~ 29,071L)