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Liverock vs. cultured rocks

Sebastian shows us today the differences between the different types of rocks that are available for your saltwater aquarium.

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Finally: Whitecorals celebrates big new store re-opening!

From now on you will find the local store of whitecorals.com in Siemensstr. 26 in Korntal-Münchingen near Stuttgart / Germany, only about 4 minutes away from our old shop. Beside the new shop with more than 500m² seawater stuff we have coral tanks with more than 100m ² of water surface, fresh live rock, a large fish and invertebrate system and 300 meters of seawater technology for each aquarium! 

Regular opening times from now on:

Monday-Friday: 14:00 - 19:00

Saturday: 10:00 - 16:00

New address:

Siemensstraße 26, 70825 Korntal Münchingen near Stuttgart


New phone number: 49 (0) 711-400 911 - 0

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Anthias in the marine water aquarium: Tips for the right keeping and introduction of various species

Anthias are among the most popular fish for marine water aquariums. We introduce the most important species and give tips for the right keeping.

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Pests in the marine water aquarium: How to fight Aiptasia and Cyanobacteria?

They are the nightmare of any aquarist: Pests in the seawater aquarium. They can occur in beginners' pools as well as in established aquariums and are a problem almost every aquarist hast o deal with someday. It’s imporant to recognize the plague at an early stage and to act quickly so they can do as little damage as possible.

We would like to introduce you two of the most common pests in seawater aquariums,  Aiptasia and Cyanobacteria, and show you how to cope with them best.

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Shrimps, corals or fish? - Suitable animals for nano aquariums

Nano aquariums, which are particularly small tanks between 10 and 150 liters, are very popular in marine water aquaristics. Nevertheless there are a few things to consider, especially in the stocking, since not all potential aquarium inhabitants can cope with that little space. Here you find some valuable tips for an appropriate stocking.


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Clownfish won‘t go into anemone - what can I do?

Thanks to the cult film Finding Nemo the Amphiprion ocellaris, better known as clown anemone fish, is also a household name for non-aquarists - and in marine aquaristics it‘s undoubtedly one of the most popular fish. The small, merry sea water fish doesn’t only impress with their unique appearance but are also quite easy to care for and thus a suitable beginners.

A special feature of clownfish is that they live in symbiosis with anemones. But what can I do when my clownfish won't go into its anemone?

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Live Rock in Reef Tanks - All you need to know!

Live rocks are an indispensable part for a healthy seawater aquarium. They had a breakthrough in the aquaristic scene in the 1990s and laid the foundation for a more equitable attitude of marine animals in domestic aquariums. Livrock does not only have a decorative purpose, but also have a function as a biological filter material and makes them import for a long-term stable tank and a successful reef aquarium.

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Five tips for brighter colored SPS corals

1) Check water equivalents regulary and keep them constant 

As simple as it may sound: The basic requirement for well colored corals are the water equivalents. Calcium (420 mg/l), carbonate hardness (7-8 °dKH) and Magnesium (1320 mg/l) should be kept on a normal level. They have no direct influence on the coloration of the coral but water additives, trace elements and other tricks don’t work if these parameters get out of hand. 

However the nutrient values are crucial fort he character of the SPS corals. Here the opinions tend to differ: The „old school“ recommends higher nutrient values, that means about 20-30 mg/l Nitrate and about 0.1-0.5 mg/l Phosphate. With these nutrient values very rich colors can be achieved, but then the colors are very dark and can get dark brown easily, because the density of Zoxanthellae increases. Zoxanthellae are always brown so the higher their density the more the brown algae overlay the actual color of the coral. Nevertheless a SPS aquarium with high nutrient values and beautiful colors is possible.

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How to keep your fish alive and well

Seawater fish are subjected to very stressful conditions, especially when they are taken out of their natural habitat and are put into a closed environment, like an aquarium. Aquariums cannot recreate a natural milieu like that of the ocean that is very much needed for keeping the fish healthy. Stress is the reason for fish to get sick from infections, bacteria and parasites that are always present in water. Any aquarists has to check the water on regular basis for components, which may cause harm to fish. Filtration is also crucial for maintaining good water quality. You can filter water through a UV sterilizer, which terminates any germs, bacteria and parasites, which go through the sterilizer. Ammonia, nitrite and nitrate should be kept as well at a minimum.

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