2.5 kg Pondlith in a
surround-filter container, 20 x 20 x 12 cm, immediately applicable in
filter systems, watercourses, OASE-filter pools, to optimise the BIOsys3
filter system or wherever pond water is moving.
A natural filter product
on the basis of Zeolite. Zeolite is a rare type of rock and was first
discovered by Baron Axel F. Cronstedt in 1756. The mineral begins to
bubble when it is heated up enough - just as if it was boiling. Therefore
the Baron called it ZEO (Greek: to boil) and LITHOS (stones). This way the
name Zeolite was born. Today the name stands for many different classes of
minerals, which does not mean that every Zeolite-mineral resource has the
same characteristics. Nowadays Zeolite-minerals are being used in various
compounds according to the demands in many different fields, such as
medicine, aquaristics, bio-sewage plants, livestock breeding or as a
bonding agent for oil, in swimming-pools and in water treatment.
on the location where it was found, on its age and crystalline structure
enormous differences in performance are noticeable. Zeolite is a
well-known filter material and has been highly esteemed by Koi-breeders
for a long time because of its 1000x larger surface than sand or gravel.
The large surface of the filter material is crucial for the settlement of
the right micro-organisms and thus for the result, to achieve naturally
clear water. Pondlith by OASE is a specially processed Zeolite with a
grain of 5-10 mm that was exclusively developed for the use as a filter
material for garden ponds. Pondlith can do a lot for a pond: In open
systems, such as in agriculture in the tillage, bacteria break down the
toxin ammonium. This way poisonous concentrations are avoided. In closed
systems - such as the garden pond - where no exchange of substances is
possible, the concentration of ammonia can rise so high that it becomes
poisonous for the occupants of the pond.
The fish themselves and the
natural decomposition of uneaten fish food and fish excrement produce so
much ammonia that bacteria in a normal garden pond cannot break it down.
Here the filter material Pondlith works in a natural way, preventing the
poisoning of the water by reducing the concentration of toxic substances
through the bacteria living on its huge surface.
Pondlith works also as an
ion exchanger in the garden pond - Ions are wandering groups of atoms -
The mineral Zeolite is a natural ion exchanger. For quality pond water,
certain organic compounds - nutrients - are being dissolved and thus
exchanged for compounds which stop the growth of green algae and therefore
prevent the clouding of the water. 1 kg of Pondlith per m2 of pond water
works in a pond without fish. In a pond with fish twice as much should be
used and in a pond with Koi-fish 4 kg per m2 are necessary.