The cover topic of the 101st issue of KORALLE is fish diseases. We present the most common ones and look at symptoms and treatment options. We also take a look at sensible preventive measures. - Photosynthesis is the lifeline of coral reefs. How does it work and how can it be supported in the aquarium? In the next issue we will look into these questions. - Roller fleece filters appeared in marine aquaristics a few years ago. Not everyone is familiar with them, but more and more aquarists now consider them as indispensable as a skimmer. We take a closer look at these devices. More in the article
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