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Zooplankton Production In The Plankton Light Reactor Pro - Aqua Medic plankton light reactor Pro Bedienungsanleitung

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must be added. A commercially available iron fertilizer for freshwater aquaria can also be added. The harvested
microalgae can be used to feed the zooplankton culture (rotifers or artemia), but they can also be added directly
to the aquarium as food for many invertebrates (mussels, tubeworms, etc.).
Cleaning:
After a few weeks of continuous cultivation, algae growth may appear on the walls of the plankton light reactor
Pro. As soon as these deposits shade the actual culture and reduce the algae yield, the vessel must be cleaned.
To do this, first transfer the algae culture into a clean container via the drain tap and close it tightly. The culture
vessel is now removed and carefully cleaned with warm fresh water and a suitable cleaning brush. The cleaned
reactor is refilled with freshly prepared saltwater and the old algae culture (1:1).
Harmful organisms:
If harmful organisms have entered the reactor - e. g. filamentous algae or algae feeding zooplankton, the reactor
has to be completely emptied and cleaned. Afterwards, the reactor is filled with freshly prepared saltwater. In
this case, you have to use a new pure culture.
Enhancement of the algae production by fertilization with CO
The algae yield can be increased several times per day if the culture is supplied with a sufficient amount of CO
A standard CO
system is required for this. The gas is fed from the CO
2
the bubble counter with non-return valve into the air supply of the algae culture.
A night switch-off is recommended for economical dosing - otherwise the pH value could drop too low during
the night. For this purpose, a solenoid valve is installed between the pressure reducer and the bubble counter.
In any case, the optimum solution is to control the CO
added to the algae culture as it consumes, and the water is always kept in the correct pH range. The pH electrode
required for this can be attached to the inside of the reactor using a suitable suction cup. For marine algae, the
pH value should be set to approx. pH 7.5.

3.2. Zooplankton production in the plankton light reactor Pro

Cleanliness is also a top priority when breeding zooplankton. To start up the reactor, it is filled with freshly
prepared saltwater. Microalgae from the plankton light reactor Pro are added as food so that the colour turns
slightly green.
If the plankton light reactor Pro is operated with rotifers, the culture mixture can now be added (Brachionus
plicatilis for saltwater). If Artemia are to be bred, the reactor can be inoculated with permanent eggs.
Cultivation of Zooplankton – rotifers (Brachionus):
We strongly recommend the two-stage food chain for breeding rotifers. Brachionus cultures fed with live algae
are much healthier and more prolific than cultures containing yeast or liquid feed. As it is bad for a rotifer culture
if it is not fed for a few days, the algae culture should first be built up in the plankton light reactor Pro before
starting with the zooplankton.
In a healthy Brachionus culture, which doubles in 4 days, at least 25% of the animals should always carry eggs.
The animals should have a gastrointestinal tract well filled with algae (green) and move quickly. If there are no
egg-bearing animals, the abdominal cavity is transparent and the animals are swimming slowly, this indicates
a lack of food.
3.3. Set up of the food chain
Once the complete two-stage food chain has been established, healthy crops can be maintained over a long
period of time - if cleanliness is guaranteed. It is advisable to strictly adhere to a fixed rhythm of feeding and
harvesting the crop. The following has proved successful:
Depending on the nutrient supply, 10 - 20 litres can be removed from the algae culture every day. The algae
culture is topped up with the same amount of freshly prepared saltwater to prevent zooplankton from entering
the culture.
After removing rotifers for feeding, the rotifer culture is topped up with the corresponding amount from the
algae culture. However, the growth of rotifers is significantly slower than that of algae, so that one algae culture
can be used to feed several rotifer cultures.
:
2
cylinder via the pressure reducer and
2
supply via a pH regulator. Then only as much CO
2
.
2
is
2
10

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