Swell Ceramic Bio Balls come with an extremely large surface area, they're highly porous to increase the biological capability of your filter. This aides in the removal of harmful ammonia and nitrogen, keeping your water in as best a condition as possible.
These are suitable for adding to any standard biological filters, and will drastically increase the efficiency of your filter, and enable it to hold much higher levels of beneficial bacteria.
Ceramic Bio Balls will kill harmful bacteria, whilst also preventing the growth of algae, and also stabilising pH levels. They are highly porous, so they can rapidly remove the harmful elements within the pond, including heavy metals.
Available in two sizes:-
Small bags - 20x30cm (400g)
Large bags - 30x30cm (1.5kg)