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Operation Manual for the
Nitratereductor 5000
Denitrifying filter for fresh and sea water aquaria up to 3000 l.
With the purchase of this Nitratereductor you have selected a top quality product. It has been
specifically designed for aquaristic purposes and has been tested by professionals.
With this unit, you are able to reduce the nitrate concentration of your aquarium water
efficiently to a harmless level.
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Summary of Contents for Aqua Medic Nitratereductor NR 5000
- Page 1 Operation Manual for the Nitratereductor 5000 Denitrifying filter for fresh and sea water aquaria up to 3000 l. With the purchase of this Nitratereductor you have selected a top quality product. It has been specifically designed for aquaristic purposes and has been tested by professionals. With this unit, you are able to reduce the nitrate concentration of your aquarium water efficiently to a harmless level.
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Page 2: Product Description
1. Product description Nitratereductor consists of the reaction vessel (height = 90 cm, volume approx. 30 l). The reaction vessel is filled with Bactoballs. In the top of the filter, the water outlet is placed. At the the top of this pipe, the port for the pressure resistent mV electrode (thread PG 13,5) is placed. - Page 3 Fig. 2: Nitratereduktor 5000 2. Theory Nitrate is coming into the aquarium via 2 different paths: - with the tap water, with every water change or with the replacement of the evaporated water - by biological reactions in the aquarium. These biological reactions are responsible for the farmost biggest part of the increase of the nitrate level.
- Page 4 Ammonium + Oxigen ----- > Nitrite + Oxigen -----> Nitrate (Nitrosomonas) (Nitrobacter) In most aquaria, nitrate is the endproduct of bacterial metabolism and accumulates in the water. Only higher water plants and algaes are able to remove this nitrate from the aquarium water. What is the effect of nitrate in the aquarium? 1.
- Page 5 3. Redox electrode. Through this opening, you can put the pressure resistant ORP electrode with standard thread (PG 13,5) Aqua Medic No: 220.18. 4. Outflow. Here, you can connect a air tube 6/4 mm, preferably, a black one to prevent algae growth.
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Page 6: Maintenance
Inflow. The inflow into the reductor, can be realised as a bypass from the main circulation pump with the included T-pieces. The flow rate is adjusted with the valve and the drop counter. 6. Starting Before starting, the Nitratereductor is filled with aquarium water and controlled for leaking and the right position of the sealing. - Page 7 cleaned under fresh water and mounted again. 3. Cleaning. If the bacterial biomass has increased after some years, the Bactoballs can be removed, cleaned with aquarium water and filled in again. 4. Renewal of Deniballs. The Deniballs have to be refilled/replaced once per year. 5.
- Page 8 Problems with the denitrification are mostly caused by wrong adjustion of the flow and the feeding rate. They can only be determined by measurements of the nitrite and nitrate concentrations in the filter or by measurements of the redox potential. - The pump produces noise.