Frequently asked questions

Freshwater Care Technical equipment

sera CO2 reactor: Connection and installation

Hello, the sera CO2 reactor is connected to the aquarium filter (internal or external filter) or a separate water pump via the larger hose connector. This ensures sufficient pressure...

Freshwater Care Technical equipment

sera CO2 reactor: Removing other gases

Hello, just take off one of the intake hoses and allow the gas bubble to escape through the hose connector! The main concern is in this case nitrogen as it indeed does not dissolve...

Freshwater Care

sera CO2-Start suitable for 112 liters?

Hello, yes it is, unless the tank is not planted extremely densely with plants that have very high light and CO2 requirements. Dissolution requires a few minutes - due to the...

Freshwater Care

sera CO2-Start: Dosage of the sera CO2-Tabs plus / How does the system work?

Hello, this, of course, basically depends on the plants you keep (species, number, size) and the other growth parameters (light, minerals, temperature, conductivity, kind of bottom...

Freshwater Diseases

sera costapur: Application tips

Hello, Concerning "lighting/CO2 fertilization":Both may remain switched on; however, you should observe the fish breathing and possibly reduce CO2 addition. Since there is a common...

Freshwater Care

sera florenette on top of or in the gravel?

Hello, it does not matter - if you consider the tablets unsightly you can also push them into the bottom gravel! Best regards sera GmbHDr. Bodo Schnell

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