Why Seachem Safe? Seachem Safe is a powerful, concentrated dry conditioner that detoxifies chlorine, chloramine, and ammonia, making water instantly safe for fish and aquatic plants. It also helps control nitrite and nitrate levels, supporting a stable and healthy aquarium environment. Safe is ideal for both freshwater and saltwater systems, offering the same trusted performance as Seachem Prime, but in a more economical, long-lasting powder form. Keep your aquarium crystal clear, your fish stre