Frequently asked questions

Hello, our sera CO2-Start with the corresponding sera CO2-Tabs plus is ideal for aquariums of this size - this system has been developed precisely for this kind of use! Best regards...

Hello, in case the pH value refers to "fresh" tap water you should simply wait, as it usually sinks in an aquarium (except if the carbonate hardness is very high). Otherwise I...

Hello, this phenomenon is not that unlikely at all and occurs rather frequently, especially in case of floating algae. The reason is quite simple:the algae literally take up the...

Hello, they contain only such minimal traces of copper that there is no danger even for very sensitive shrimps and other invertebrates. sera florena and sera florenette are...

Hello, there is actually only the possibility of completely deionizing the water.Preferably with an ion exchange system rather than a reverse osmosis (R/O) unit, since iron tends to...

Hello, the pustules and threads are probably black spot and/or beard/brush algae, which biologically belong to the red algae. In this case it is advisable to lower the phosphate and...