14
Fig. 3: Bushing or tank fitting
(the glass pane is placed between slide ring 3 and rubber ring 2)
1.
Thread
2.
Rubber sealing
3.
Slide ring
4.
Nut
There is a blue fitting in the mounted bend of the return line. Here, air is sucked in when the pump
in the cabinet fails. This prevents the formation of communicating pipes and an overflow of the
filter tank by returning water.
When starting the aquarium, water has to be filled in until the filter tank is filled up to 10 – 12 cm
in the front part and then the pump has to be started. If the water level in the filter tank
decreases, water has to be filled in until the a.-m. maximum is reached. Take care that enough
space is left so that the inflowing water in case of failure or shutdown of the circulation pump still
fits into the filter tank.
The cables of circulation pumps or other parts mounted in the aquarium can be routed through the
empty conduit downwards. If a plug is too big for this, the profile slid onto the rear panel can be
cut with a PUK saw so that cables can be led out of the aquarium at the back. The back side
should, however, remain closed to allow the fan to suck in air in the aquarium and not from the
outside.
