Often pond owners complain about unwell fish shortly after a new pond has
been built. In the first few weeks of a pond's life it has not yet
biologically fully established itself. That means plants and
micro-organisms cannot cope with all the toxic substances because they
take at least 4 weeks to be able to do so.
The worst case scenario: The pond 'dies' and with it all the living
organisms in it.
has to be done?
First of all it needs to be established whether nitrite is the cause. The
presence of nitrite as well as ammonia proves that the vital biological
processes have not yet or only partly started. The nitrite test in the
OASE aqua activ "Test
Set" allows the pond owner to determine in minutes in his own home
whether the water is ready to cope with fish. In any case new ponds (and
also old ponds which have been refilled with fresh water) should be
immunised with OASE aqua activ "Starter
Bacteria" from the OASE pond treatment range. This speeds up the
biological processes and the level of nitrite will cease to be dangerous.
The question, when fish can be introduced to the pond is hereby answered:
Only once the nitrite level is not dangerous anymore. Of course the
pH-value should also be in the optimal range between 7.5 and 8.6. In case of the pH-value being well above
9.0 already "pH-value
Minus" can help to lower that level.
the pond stay stable?
A regular addition of "Starter
Bacteria" during the warmer months of the year combined with a
sufficient lime content of the water will ensure great plant growth and
little algae. The pond is then in a stable condition.
Use the biological sludge reduction "Ground
Clear" plus "Oxygen
Stabiliser" for ponds with silt and where a pond vacuum cleaner
can not be used. These products constitute great means of
rehabilitation if the water depth is declining due to an increasing amount
of silt at the bottom of the pond. Equally important is additional
aeration and vertical water movement with suitable pumps and aeration
devices by day and night.
OASE aqua activ
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