NT Labs Koi Care Zeolite, Zeolite Chunks with Filter Media Bag, Rapidly Removes Toxic Ammonia from Pond Water, Reduces Nitrite and Nitrate in Pond Water, Maintains Health and Wellbeing of Pond Fish

I had an ammonia spike in my koi pond, dead leaves decomposing in the filter. I bought 10kg of this put it on the supplied bag tied it to the side of the pond and dropped it in. 3 days later, ammonia back to normal. Very good product and highly recommended.

We have had a lot of trouble with ammonia in the water and using the Koi Care Zeolite has really helped to reduce it. We will know more once the winter is over and the fish will become more active. Do follow the instructions as you have to rinse the chipping's well before putting them into the filter as the water will be very murky if you don't.

Arrived on time and as described

Good seller fast delivery thank you .

Item arrived early and in good condition. Item was bigger than expected but nothing a hammer and a cloth could not sort out bag which comes with it is a good size and will last for a good time. Now in filter and ammonia level has dropped so now removed and at pres staying under control. Will use seller again when i want more.

This products really good and Iv had 6 good bags. My recent order tho wasn’t so good. Bag had been opened and the bag inside removed, then taped bck up. I no it’s only a bag but it’s held up my pond build. Today Iv had 3 tiny bags arrive witch just isn’t big enough. Again Iv now got to go out and buy a bag which should have cone with the product in the first place

Lots of smaller bits than stated size so just falls out the bag provided. But just what we needed for our pond so had to use makeshift bag to contain ot fast delivery

Great stuff, delivered quickly, thorough rinse through and then into the provided mesh bag. Will be testing water regulary to note any ammonia level changes..