Aqua Medic Refill Fix – nano auto top-off without power

Aqua Medic Refill Fix – nano auto top-off without power. Keeps the water level in small aquariums constant, without power and without electronics.

In short: The Aqua Medic Refill Fix is a top-off unit for nano aquariums. You screw on a standard PET drinks bottle of up to 2 litres, hang the unit on the aquarium pane, and evaporated water is replaced automatically from the bottle.

At a glance

• Manufacturer: Aqua Medic (item number 502.78)
• Function: evaporation top-off without power
• Bottles: standard PET bottles up to 2 l with a matching thread
• Pane thickness: 3 to 10 mm
• Material: ABS
• Dimensions: 36 × 36 × 35 mm
• Use: nano aquariums, marine and freshwater

How the Refill Fix works

The bottle, filled with RO water, is screwed upside down into the Refill Fix. The unit sits on the pane. When the water level drops through evaporation, air flows into the bottle and water runs out until the original level is reached again. How long one filling lasts depends on the bottle size and the evaporation of your tank.

Frequently asked questions

Do I need power?

No. The Refill Fix works purely mechanically, without any power.

Which bottles fit?

Standard PET drinks bottles up to 2 litres with a matching thread.

Which pane thickness is it suitable for?

For panes from 3 to 10 mm.

Which tanks is it suitable for?

For nano aquariums with low evaporation. On rimless tanks with thin glass, do not knock the full bottle so that no leverage acts on the pane.

Which water do I top off with?

RO water. Only fresh water is lost through evaporation; the salt stays in the tank.