Rewa Mirabello MIR 30 Instrucciones Y Garantía página 26

of synthetic wool trap any remaining deposits, neutralizing all organic substances that tend to colour the water or create bad
smells. The Mechanichem filter cartridges should be rinsed every 7-8 days under running water and replaced once a month.
CHEMICAL ACTION
This filtering action works on the chemical substances in drinking water (e.g. chlorine, phosphates and nitrates), pigments that
reduce its clarity, potentially toxic organic compounds, drug residues and smells etc. With the NEWA Mirabello filter, this action
is carried out by plant-derived active carbon in the NEWA Mechanichem filter cartridge. This carbon has a very porous structure
and a wide surface area that allows a highly physical and chemical absorbent capacity. In this way, any harmful substance
inseparably sticks to the carbon that saturates it: this is why the NEWA Mirabello Mechanichem filter cartridge needs to be
replaced regularly, about once a month.
BIOLOGICAL ACTION
EN
This essential filtering action is carried out by nitrifying bacteria that colonize the biological base and the interchangeable
BioFoam filter cartridge. Biochemical transformations purify the water, removing organic substances deriving from the fish
faeces, food debris, decaying leaves and plant fragments. These weaken the aquatic fauna, making it particularly sensitive to
stress and diseases. In order of toxicity, these are (Fig. 11):
1. Ammonia (NH3), a very toxic substance that, with the presence of the correct pH, is soon transformed into ammonium ion (NH4
+), which is less toxic but chemically unstable.
2. Nitrites (NO2), the result of the transformation of NH3 and NH4 + by certain bacteria in the filter. It is a toxic compound even when
it is a low dosage.
3. Nitrates (NO3), substances derived from the transformation of nitrites by other bacteria. Within certain limits, nitrates are not very
toxic and well-tolerated by fish.
A newly set up aquarium requires special attention, since the filters do not yet have a sufficient quantity of bacteria for efficient
biological filtering. It is therefore advisable to wait at least 8-10 days after switching on the aquarium before introducing fish
and, at least during the first month of operation, feeding the fish sparingly, since food also contributes to increasing the quantity
of dissolved organic substances.
V.d ACTIVATION OF FILTERING CARTRIDGES
Biofoam:
Slightly rinse the sponge with warm water and install it back.
Mechanichem:
Do NOT rinse the filter cartridge containing the activated pre-conditioned carbon.
V.e PUMP-FILTER CUSTOMIZATION
The pump / filter has its own housing to place the filtered materials. We recommend the use of filtering materials from the
NEWAQUA line.
To insert these materials, follow these steps:
Remove the pump along with its case for additional filtering by controlling the first rotation of the water drain reflector to the
internal part (Fig. 12). Separate the pump from the housing and remove the grid cover (Fig. 13).
The housing may be filled with filtering materials such as:
A) NEWAQUA ANTI-NITRATE and NEWAQUA PHOSPHATE: Ion-exchange resins useful for reducing the hardness of the water (ideal for
salt-rich waters), eliminating phosphates that cause algae formation, or nitrates such as polluting elements deriving from dissolved
organic residues.
B) NEWAQUA CARBON-ACTIVE: Activated carbon to enhance chemical filtration available in 3 sizes, each deriving from different
natural elements, depending on the diverse needs for absorption.
C) NEWAQUA MICROCERAMIC or CERAMIC HI-Q: ceramic elements with an extremely porous structure to maximise the performance
of biological filtering.
D) NEWAQUA ACTIVE ZEOLITE: active mineral of volcanic origin with very high absorbing capacity, capable of capturing and retaining
ammonia in real time.
V.f PUMPING CAPACITY REGULATION
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