Themeworld

Running-in or initial phase

Here’s how to ensure your aquarium has the right start – the important running-in phase

Once your aquarium is set up, water has been poured in and the technical equipment is running; then only the microflora for it to work biologically is missing.

Sometimes it is recommended to wait just a few weeks, before adding fish and invertebrates. But this approach bears the following risk: If running in the aquarium WITHOUT fish and invertebrates, beneficial bacteria hardly develop and reproduce in the aquarium because without fish and invertebrates there is simply no water pollution. But if you add them from the beginning the reproduction of bacteria lags behind and the water parameters can become critical, even leading to deaths (ammonia and nitrite; for more details, see Water values ).

We therefore recommend the following procedure, which we guarantee to work:

At least 15 minutes after adding the water conditioner JBL Biotopol please add JBL Denitrol (shake well before using). After a few hours the containing bacteria will have become active and start to break down pollutants and to reproduce. Now you can (and should) start adding the fish stock the next day and increasing numbers during the following days. As a consequence the bacteria are confronted with increasing water pollution and react by reproducing. At the same time the bacteria you have added prevent problematic water values (ammonia and nitrite values).

Please feed sparingly during the running-in phase, which normally lasts about one month, and carry out a weekly partial water change of about a third of the water content. Ideally carry out the water change with the help of a gravel cleaner ( JBL AquaEX Set 20-45 or JBL Aqua In Out complete set ).

Attention: The use of antibacterial medicines, such as JBL Ektol bac Plus 250 will also kill the available beneficial bacteria. Therefore you will need to inoculate your aquarium again with bacteria after the treatment, as you do for an initial setup.

A word about cookies before we continue

The JBL Homepage also uses several types of cookies to provide you with full functionality and many services: We require technical and functional cookies to ensure that everything works when you visit this website. We also use cookies for marketing purposes. This ensures that we recognise you when you visit our extensive site again, that we can measure the success of our campaigns and that the personalisation cookies allow us to address you individually and directly, adapted to your needs - even outside our website. You can determine at any time - even at a later date - which cookies you allow and which you do not allow (more on this under "Change settings").

Are you over 16 years old? Then confirm the use of all cookies with "Noticed" and you are ready to go.

Choose your cookie settings

Technical and functional cookies, so that everything works when you visit our website.
Marketing cookies, so that we recognize you on our pages and can measure the success of our campaigns.