Zeolite is a porous mineral used in some filter media that physically absorbs ammonia from water, on top of whatever biological filtration a biofilter is doing. It’s most useful as a temporary boost, during pond cycling or after a stocking increase, since it needs periodic recharging or replacing once its absorption capacity is used up.
Zeolite
Lokorio
Certified Aquaculture Expert & Founder, Memeilo Ponds
Moses Lokorio is a certified aquaculture expert with over 6 years of hands-on experience helping fish-pond builders create healthy, balanced pond ecosystems. At Memeilo.com, he writes detailed, data-driven guides to simplify pond construction, maintenance, and fish care for DIYers and professionals alike.