Seachem Zeolite

$4.07 ~~$5.99~~ In stock

Category: Aquarium Filtration

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

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 won’t deplete calcium in saltwater, and it won’t increase general hardness in freshwater, where the ionic strength is low.

Available sizes:

100ml
250ml
500ml
1L

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Customer Reviews (4.8 / 5 · 4 reviews)

Claire S. ★★★★★ Oct 20, 2026

Cleaned up the heavy metals in my quarantine tank faster than I expected, and the ammonia binding is noticeably better than the last brand I tried. My fish settled in without any stress, which is all I care about.

Victoria ★★★★★ Oct 19, 2026

My tank’s copper levels were creeping up after a bad tap-water change, and this stuff pulled them out within a week—the fact it handles both ammonia and heavy metals is a huge win for me. It’s pricey, but the capacity is real, and it works in fresh or saltwater without any fuss.

Olivia ★★★★★ Oct 18, 2026

This stuff yanked the ammonia down to zero within two days after my tank cycled unexpectedly; the water tests finally backed up what the label claims. Even the copper levels dropped, which is a relief with my invertebrates.