Seachem Zeolite is a naturally occurring, highly-porous mineral that binds ammonia and heavy metals through an ion exchange mechanism.It has the highest ammonia binding capacity of any available zeolite; ten times higher than some products and twice the capacity of the closest competitor. It wont deplete calcium in saltwater, and it wont increase general hardness in freshwater, where the ionic strength is low.

• Binds ammonia and heavy metals
• Highest ammonia binding capacity of any zeolite
• Removes harmful metal ions like lead, copper, nickel and zinc
• Marine & Freshwater