
5
1. Body of the valve
2. Magnetic reel
3. Power cord
4. CO
2
-inlet
5. CO
2
-outlet
6. Now, a tube is ounted in the sa e way on the outlet (5). Here, you do not need to use a
pressure tube, you ay use ordinary PVC-tube (6/4 , ¼“).
7. The free end is connected to the bubble counter inlet or to the CO
2
–inlet.
8. If you use a pressure regulator with adjustable operating pressure, set it to 1 – 1.5 bar.
Note: Always use a non-return valve between the aquariu and
solenoid valve. It prevents water fro flowing back fro the aquariu
into the regulator and the CO
2
–bottle and ay cause da age. We reco end
to use the original Aqua Medic bubble counter with integrated non-return valve.
3. Operation with timer
The CO
2
–consu ption during the day (light phase) is deter ined pri arily by the plants. In the
night (dark phase), the plants excrete CO
2
–gas. So it is not necessary to provide CO
2
during the
night ti e, it ay even be har ful. The solenoid valve can be linked to a ti er to eet these
specific require ents. An elegant solution is to connect the solenoid valve to the ti er that
controls the light. The valve is then switched on and off together with the light.
4. Operation with pH controller
This operation ode should be preferred in co parison to others. It is the ost exact and
econo ic version. Only the exact quantity required is fed into the syste . It balances the loss that
is, for exa ple, caused by water ove ents and aeration. Fluctuations of the pH-values are
avoided by an electronic control. This is an advantage for the creation of a well-balanced
environ ent.
5. Operation with water
The Aqua Medic solenoid valve ay also be used for the control of s aller reverse os osis
syste s. So e i portant points have to be taken care of to avoid istakes and da ages:
- The reverse os osis unit should not exceed the capacity of 150 l/day (35 gpd) of pure water.
The s all opening of 2 will cause pressure drops and decrease the capacity, if used with
larger syste s.
- If used with tap water, the solenoid valve ay be blocked by dirt and rust. In order to avoid
this, several precautions have to be taken:
- The solenoid valve has to be connected between the sedi ent filter and the RO odule to
protect it fro clogging. The storage tank where the water is collected should have a safety
outlet to the drain. If used for saltwater aquaria, the evaporated water should not be refilled
directly fro the RO unit. It is reco ended to collect the RO water in a separate tank and to
provide the aquariu fro this tank.
- The solenoid valve ay not be operated with saltwater or pure water (reverse os osis).