13
5.
Connections
The following connections are located at the Nitratereductor:
1.
Inlet: Here, you can connect a 6 mm air tube. At the inflow, you find an adjustion valve to
adjust the flow rate. The best value is approx. 0.5 - 1 l/hr (approx. 1 drop per second). The
adjustion at the inflow causes a delay until you can read the adjusted drop number at the drop
counter at the water outlet. The drop counter is mounted inside the aquarium, close to the water
level. If the flow rate is regulated in the outlet, the valve may not be closed completely in order to
allow produced nitrogen to escape. During the start phase in the first weeks, the outlet valve
should stay completely open.
2.
Feeding: Through this opening, you can inject Denimar tablets with a syringe to enhance
denitrification. Dissolve the tablets beforehand in some water. The valve has to be cleaned and
closed after every feeding.
3.
Redox electrode: Through this opening, you can put the special pressure resistant ORP
electrode with a special length and standard thread (PG 13,5) Aqua Medic No.: 220.19.
4.
Outflow to aquarium: Here, you can connect a tube 8/6 mm.
6.
Set-Up
The Nitratereductor is a hermetically closed system. The produced gas (nitrogen and CO
2
) can
escape through the water outlet. For this reason, the outlet should never be completely closed
because an eventual overpressure may escape through the water inlet and interupt the inflow.
The Nitratereductor
has to be placed in a way that the water can flow off either directly back into
the aquarium or into the filtration chamber. In a seawater aquarium, it is advantageous if the
outflowing water is flowing into the inlet of the protein skimmer or the trickling filter. In the protein
skimmer, the water is saturated with oxygen before it comes back into the aquarium.
Inflow
:
The inflow to the reductor can be realised as a bypass from the main circulation pump with
the included T pieces. In case of a Percula aqurium, the reactor has to be placed in the chamber
behind the trickle filter. There is a special adapter available (503.00-17 - not included in shipment)
for the connection with one of the pumps for the water current. Put the adapter on the pressure
side of the pump and stick it through the hole of the filter chamber.The flow rate is adjusted by the
valve and drop counter.
7.
Starting
Before starting, the Nitratereductor is filled with aquarium water and controlled for leaking and the
right position of the sealing. Close both clamps tightly. The internal circulation pump can be
switched on.
