Frequently asked questions

Hello, yes, this is completely alright. The main amount of oxygen is absorbed by the surface and not by aeration - however, the surface is also somewhat increased by bubble...

Hello, yes it does. We recommend 1 liter sera siporax Professional per each 100 liters (instead of 200 liters, as usual) of water, or even more. This will result in considerable...

Hello, the water is taken in in the bottom section and then first runs through a sponge that in itself is almost entirely safe - even for juvenile shrimps. If you still have doubts...

Hello, an external filter is possible. The filter type isn't that important - both internal and external setups will work just fine. The setup is pretty simple: the first step is...

Hello, yes, that concerns the complete filter! Make sure that no sand/gravel can get in and possibly damage the rotor, when place it on the bottom! Best regards sera GmbHDr. Bodo...

Hello, no, the unit must be calibrated with the pH 9.2 solution mentioned in the instruction. Calibrations with solutions other than the mentioned ones will either not be possible at...