The marine aquarium

The marine aquarium

Colourful corals and fish in the reef

What is a marine aquarium?

We distinguish between freshwater, brackish water and marine aquariums. Freshwater aquariums contain animals and plant from freshwater biotopes, such as streams, rivers and lakes. In marine aquariums live animals and plants from the seas, whose water tastes salty because of the high salinity. Marine water is therefore also known as saltwater. Brackish water is water which characterises the transition area between fresh and marine water.

The marine aquarium – a piece of ocean in your living room

For many people a coral reef in the living room is the aquarium owner’s absolute dream. But they are often discouraged by efforts and expenses, although marine aquarium keeping doesn't have to be expensive! Experienced marine aquarium owners can successfully maintain small 30 litre marine aquariums trouble-free for many years. Beginners should start with an aquarium with a volume of at least 200 litres, since this water quantity is more forgiving.

Video of a reef aquarium

The short video shows the lively bustle in a section of a 1000 l coral reef aquarium shortly after feeding.

What is important before the purchase?

Fish selection

If you want to keep a specific species of fish, make sure you find out the maximum size of the fish species and whether this species eats corals and/or other invertebrates. Unfortunately some outlets offer juveniles of fish species which later grow longer than 50 cm! Some marine species look unbelievably beautiful as juveniles but belong to the ugliest and most aggressive fish in the sea when grown up! Many fish species are unsuitable if you want to keep a coral reef aquarium with a variety of corals and other invertebrates, because they would eat the corals. There are also fish species where you can’t definitely say in advance, whether they eat corals or not. This is similar to people: some are vegetarians and others are huge fans of steaks.

Coral eating fish

Space requirement aquarium & technical items

Space requirement: Marine aquariums need space for more technical equipment than freshwater aquariums. A lot of marine aquariums have an overflow box, where the water flows downwards to run off and be collected in a second aquarium below your main aquarium. There the filter, the skimmer and possibly further technical items are located. A powerful pump supplies the water upwards again into your aquarium. That’s why you also need space for this construction INSIDE your aquarium cabinet.

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