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A substrate is not usually used in quarantine aquariums as it is easier to clean. However, the mule and dirt must be vacuumed out daily.
In normal aquariums, the substrate fulfils both aesthetic and other functions. The substrate provides the necessary habitat for bacteria that break down harmful substances.
For plants, the substrate provides the support and, with the nutrient soil, also the food for growth. The height must be between 5 and 7 cm.
For bottom-dwelling fish, but also other species that like to burrow in the substrate or need the gravel for a breeding trough, this is also required by law. Animals must be able to satisfy their basic needs.
The substrate must be adapted to the fish species.
A common gravel grain size is between 2 and 6 mm, which covers most aquarium biotopes. Gravel coarser than 12 mm is rarely used.
In nature, however, gravel is not always the same size, so a mixture can also be used. This looks more natural than if the gravel always has the same diameter.
When buying aquarium gravel, make sure that it is not sharp-edged. Corydoras and other fish with barbels like to dig in the substrate and can otherwise injure themselves.
You can also create a corner with aquarium sand. Sand in large layers is pressed tightly together and can lead to oxygen-free zones and the roots die off. This can lead to putrefaction centres with the formation of H2S, which can be fatal for the fish when released.
100cm x 50cm x7cm = 35'000 : 1000 = 35 litres
Depending on the product, the quantity is written in litres or kilograms. In the case of kilograms, you must calculate the quantity x 1.5 (as gravel is heavier than water) - so in our example this would be 52.5 kg.
If you buy a culture medium, you can subtract this amount. Always buy enough substrate, as it is difficult to set up if you have too little at home. We also take back whole bags.
08/10/2026
Von der Bestellung bis zur Lieferung ist alles bestens , Bestellung kam pünklich und gut gesichert an .Die Pflanzen sind von der Qualität sehr gut und sind schön angewachsen.Auch die Preise sind bei ZooRoco sehr günstig
07/10/2026
05/10/2026
Habe hier meinen Kratzbaum bestellt und bin überaus zufrieden. Die sehr detaillierten Beschreibungen auf der Website haben mir bei der Auswahl weiter geholfen. Man spürt die Erfahrung und auch Liebe ins Detail, nicht einfach nur copy/paste vom Hersteller, wie man es von grossen Ketten gewohnt ist. W...
03/10/2026
Fantastic customer service and quick shipping. I have always been pleased with the products :)
02/10/2026
Breite Auswahl, freundliche und hilfreiche Bedienung. Schnell gefunden was ich gesucht hatte.
01/10/2026
26/09/2026
24/09/2026
Toller Laden. Das Personal ist sehr hilfsbereit und hat viel ahnung.
23/09/2026
Wunderschönes und qualitativ hochwertiges Geschirr. Schneller Versand.
20/09/2026
16/09/2026
15/09/2026
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Jessica Moosmann
Jessica Moosmann is our aquarium specialist. As a trained retail specialist specialising in pet supplies with over ten years' experience at Zoo Roco, she is not only familiar with the Latin names of fish and plants - she has also been able to gain some experience and is happy to pass this on to you. Jessica's expertise in aquaristics includes not only the selection and care of different fish species, but also the design of aquarium landscapes. She deals intensively with topics such as water quality, filter technology and lighting in order to create optimum conditions for the well-being of the aquatic inhabitants.
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Schönes Kissen für unseren Kater und sein Katzenbett. Toll, dass man den Bezug abnehmen und waschen kann.