Zeolite Gravel (3-4mm) – 10kg Bag
Zeolite is a naturally occurring volcanic rock that is mined in Australia from reputedly the best quality deposits in the world.
It has many varied uses, it is approved organic and an approved soil amendment (Water Corp). It is also used for pollution control and as an odour control for artificial turf.
In a pond its main role is reducing algae growth by absorbing Ammonia (the main element we don't want in a pond that comes from rotting organic matter/fish waste), which bacteria then convert into plant food. Any plant that has a root system can extract the stored nutrient within the Zeolite. This acts the same on land as it does in water. It basically stores the nutrient until a plant asks for it. Therefore Zeolite helps with the natural process of the nutrient cycle in your pond.
Algae is filamentous or single-celled which means it is locked out of this nutrient cycle, so effectively the zeolite is starving it.
We believe that any and all ponds can and would benefit from Zeolite, which you can never overdose. Whilst the sand will fall through the water grabbing onto single celled algae and clinging to blanket weed, Zeolite gravel will go straight to the bottom and should be part of your substrate. It is great in aquariums, small water bowls, bird baths, a main pond, streams, waterfalls and filtration systems.
When using on land the gravel can be dug into the ground 2kg per square meter.