Deltec NF 509 Instructions D'utilisation page 3

Sulphur Nitrate Filter NF 509 - NF 1020
Regular feeding of fishes and invertebrates can lead to a dangerous concentration of nitrate. It is beyond
dispute that biological removal of nitrate makes a lot of sense in the marine as well as in the fresh water
aquarium.
Biological nitrate removal
Anaerobic bacteria can reduce nitrate into other substances. This can only happen under anaerobic water
conditions (free of oxygen). To ensure an effective biological nitrate removal certain pre-conditions must be
fulfilled
Anaerobic water conditions in the nitrate filter through a 'drop by drop' water supply.
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Measurable nitrate content in the aquarium water.
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Aerobic filtration system must be well established
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Starting up
Before connecting the
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be thoroughly rinsed to remove any dusty particles.
Connect the inlet of the micro filter to a pump or bypass of the aquarium. The outlet
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should not be led directly into the aquarium.
Adjust the water flow initially to app. 1 drop/second and allow the filter to run like this for at least
-
2-3 weeks, checking the flow frequently.
During the „running in" period the nitrite (NO2) and nitrate (NO3) level can increase measured at the
outlet of the filter. This is not dangerous as long as the aerobic filter system and the aquarium is mature.
Also the pH level can be very low. It is therefore recommended to run the outlet into a container filled with
a limestone media as used in calcium reactors.
Important
The „running in" period for the
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weeks or even longer!
Measure the nitrite (NO2) and nitrate (NO3) levels on a regular basis at the filter outlet. If both,
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nitrite and nitrate levels are 0 mg, increase the flow slightly (for instance 2 drops per second) and
again measure NO2/NO3 at the outlet.
The increase of the water flow should be done in stages in small amounts at the time in order to
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establish the maximum possible flow for the system.
Do not increase the flow too much, since this might „tip" the filter and cause undesirable reactions.
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If this happens, the filter has to be restarted with a flow of 1 drop/second.
technical data
NF 509
NF 511
NF 616
NF 1016
NF 1020
sulphur nitrate filter to the aquarium the filter should
Sulphur nitrate filter is relatively long, it can take up to 8
dimensions (l/w/h) ca.
180 x 140 x 500 mm
220 x 160 x 500 mm
300 x 250 x 600 mm
300 x 250 x 1000 mm
350 x 300 x 1000 mm
sulphur suitable for aquaria up to
2,5 kilos
3,4 kilos
7,0 kilos
17,0 kilos
27,0 kilos
EN
900 ltr.
1400 ltr.
2500 ltr.
7000 ltr.
10000 ltr.