Seachem Zeolite Media 250 ml
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 also removes harmful metal ions like lead, copper, nickel and zinc. Many zeolites deplete calcium levels in saltwater tanks, but Seachem Zeolites will actually supplement calcium by 10 -15 mg/L. Yet, it won't increase general hardness in freshwater tanks, where the ionic strength is low.