Ammonia Away Green is laboratory proven to be 2X more effective than competing products at removing ammonia the #1 killer of tropical fish. This super-effective GREEN zeolite is superior to standard zeolite, making it the best way to rid aquariums and ponds of ammonia. Ammonia Away Green creates a healthy environment for fish, minimizing foul odors and cloudy water conditions. Each jar of our Ammonia Away Green has a convenient flip-up handle.