Aqua Medic Multiballs Biological-chemical filter material for fresh and saltwater aquarium is available from Swell UK.
MULTIBALLS are a filter medium in which the biological function can be combined with a desired chemical filtration. They resemble large BACTOBALLS (44mm).
Their properties ensure a large surface area and good water distribution.The secret of the MULTIBALL is that it consists of two half spheres that can be easily separated.
The outer surface provides a perfect site for the formation of bacterial colonies for biological filtration whilst inside the MULTIBALLS is a cavity which can be filled with numerous types of chemical filter media.
Depending on the requirements of the aquariums inhabitants, MULTIBALLS can be filled with activated carbon (CARBOLIT), ANTIPHOS, zeolite, HYDROCARBONATE, or peat granules.
Thus the MULTIBALL can be function as an individual biological or chemical filter material for use in trickle filters or in canister filters.