Askoll pure xl Instruction Manual - Page 10

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Mechanical filtration, which uses double layer sponges, removes

suspended particulates to keep the water clear. You can always

check the degree to which the sponges are soiled by simply opening

the filter cover.

Biological filtration, done by the nitrifying bacteria which grow in

the pores of the ceramic cylinders, minimises the level of toxic chem-

icals in the water, which are harmful for the aquatic fauna, transform-

ing the ammonia produced by the fish into nitrates. It takes around

4 weeks for a sufficient amount of bacteria for effective purification

to develop in the filtration media. This is why the first month of the

aquarium's life is critical, and the fish should be added only gradually,

to allow the nitrifying bacteria to take hold and multiply to a suitable

level.

Chemical filtration is done by the 3ACTION cartridge, which con-

tains a special mix of three ingredients:

•

Activated carbon for purifying the previously filtered water from

bad odours, colourants, pharmacological residues and other un-

desired compounds.

•

Anti-nitrates and anti-phosphates for effectively removing from

the water nitrates and phosphates, which are among the major

causes of algae proliferation.

Replacing the 3ACTION cartridge regularly (par. 6.2) allows the ma-

jor undesired compounds to be kept under control and effectively

combats the growth of algae and keeps the water clear and trans-

parent.

REMARK

In seawater aquaria, the nitrate removal function is not effective.

5.1.3. Heating

After disconnecting the plug, let the hot parts of the

thermal heater (about 30 minutes) and of the lighting

unit (about 5 minutes) cool down, before handling

them. On the thermal heater, the warning light indi-

cates only that the heating phase is active. When the

warning light is off, it does not mean that the thermal

heater is cool.

The thermal heater is factory calibrated. Variables like

low ambient temperature, large temperature fluctua-

tions, lack of covers, positioning of the product close

to cooling sources, may require a higher power to pro-

vide for a better temperature control.

Prevent the bottom (sand or other material), plants and

any other items present in the aquarium from getting

in contact with the thermal heater. It is necessary to

assure a free water circulation around the glass tube.

Install the product close to the pump (fig.9) to ensure

that the heated water is distributed evenly and com-

pletely throughout the aquarium.

WARNING

To avoid the risk of burns:

CAUTION

The thermal heater allows adjusting aquarium water temperature

(from 18°C to 31°C) using the adjustment knob referred to the grad-

uated scale (fig. 8). Once it has been started up for the first time and

the water has reached the setpoint, the thermal heater will keep the

temperature constant by turning off and on as needed. Wait for the

water to reach the temperature set on the thermal heater before put-

ting fish or other animals into the aquarium. Check the temperature

with an aquarium thermometer (not provided).

REMARK

The thermal heater only guarantees water temperature control

when the set temperature is higher than the ambient temperature.

The maximum temperature rise (Δt) of water in relation to the am-

bient temperature is around 10 °C.

5.2. In case of power failure

Power failures have the following effects:

•

Gradual reduction, after a few hours, of the effectiveness of the

biological filter, thus potentially damaging the aquarium eco-sys-

tem.

•

The timer may need reprogramming if the power failure lasts

more than 12 hours or so.

•

The water temperature may fall in proportion to the duration of

the power failure.

For malfunctions, refer to Chap. 7.

6. MAINTENANCE AND CLEANING

To avoid electric risk:

Disconnect the plugs of the electric devices from the

outlets before handling the product and/or immersing

the hands in water.

Never pull the cable of the electric devices to discon-

nect the plugs from the outlets. To disconnect them,

grab the plugs and pull them.

Do not connect the electric devices of the product to

the mains before having completed the installation or

having repositioned the same after maintenance op-

erations. Do not use the thermal heater and the pump

dry.