Overflow box to skim the surface water layer of your aquarium. With this overflow box, an existing aquarium
can be connected to an open filter system mounted under the aquarium without any drilling.
With the purchase of this overflow box, you have selected a top quality product. It has been specifically designed
for aquaristic purposes and has been tested by experts. Circulating rates of 2,500 l/h (OFB 2500) resp. 5,000
l/h (OFB 5000) between filter and aquarium can be achieved.
1. Basics
Aqua Medic Overflow Boxes are specifically designed to skim the surface water layer of your aquarium. Before
following the instructions below, you need to decide where to position the unit.
Normally, it should be placed as far away from the inflow as possible. Also, before starting, you need to check
the capacity of the tank of the filter system below your aquarium. When you initially start the overflow box, it
will drain water from your aquarium to the height of the front edge of the outflow box. For example, if you place
the outflow box 1 cm below the surface, the top cm of water from your aquarium will initially drain out until the
flow stops. If you have a large aquarium, this might be a lot of water.
2. Product description
The Aqua Medic Overflow Boxes OFB 2500 and OFB 5000 consist of:
- overflow box
- safety guard
- tank screwing
- adjusting knobs
OFB 5000 has 2 tank screwings, OFB 2500 only has one.
Fig. 1
1. Overflow box
3. Nut for tank screwing
4. Rubber seal
5. Tank screwing
Available spare parts: Please refer to www.aqua-medic.de.
3. Installation
1.
Put the tank screwing into the hole in the bottom of the overflow box (see Fig. 1).
2.
Screw the three adjusting knobs on the overflow box. Connect the tank screwing to the outflow hose or to
a fixed outflow piping system.
3.
Fix unit in appropriate position to your aquarium and allow water to fill the front chamber (Fig. 2). With the
bottom adjusting knob, you can adjust the unit so that it is parallel to the tank.
4.
Adjust the unit's height by using the two top adjusting knobs so that the height of the overflow edge is 5 -
8 mm below the water level. Move safety guard that way that no fish could enter the overflow box.
5.
Fill front chamber with aquarium water (Fig. 3). To start the overflow, draw air out of the overflow box.
This can be done by connecting an air tube to the nipple on top of the unit. The air can be removed by
either connecting the tube with a current pump or by sucking on it until flow starts (Fig. 4).
4. Ventilation
To ventilate the overflow, there are the following possibilities:
1. Suck on air tube until water flows and place the tube's end into the tank. The tank should be placed at least
60 cm below aquarium level. This procedure is safe as long as the circulation pump does not break down.
4
Operation Manual ENG
Fig. 1