KORDON'S Aquarium Water Conditioning Kit contains bottles of both AmQuel® and NovAqua® water conditioners. This kit is suitable for treating fresh or salt water. This is a convenient way to insure having a supply of both AmQuel and NovAqua, the two water conditioners that work together to provide the best in water quality. The NovAqua and AmQuel that are included in this Aquarium Water Conditioning Kit will condition water (either tap water or bottled drinking water) to make it suitable for fishes and invertebrates. NovAqua and AmQuel will also improve the conditions in existing aquariums. Many fishes are tolerant of a wide range of water conditions, but all fishes need good, clean, non-toxic water. AmQuel and NovAqua are designed to be used alone or in combination to perform many essential functions necessary for keeping fishes and invertebrates alive in fresh or saltwater aquaria, including the removal of chlorine, ammonia, chloramines, copper and other heavy metals. In addition, NovAqua acts as a stress reducer by supplying the needed electrolytes and an artificial skin coating to help prevent shock and stress during water changes or handling.