Ich (White Spot) bei Fischen: Vorbeugen und behandeln

„Ich“ ist die umgangssprachliche Bezeichnung für die Weißpünktchenkrankheit bei Süß- und Meerwasserfischen. Verursacht wird sie durch einzellige Parasiten (meist Ichthyophthirius multifiliis im Süßwasser), die sich schnell vermehren und ganze Bestände gefährden können, wenn nicht konsequent gehandelt wird.

Typisch sind kleine weiße Punkte auf Haut und Flossen, begleitet von auffälliger Scheuerbewegung, angelegten Flossen, Atemnot und rascher Abmagerung. Besonders ... Read more »

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Me & Velvet Sickness on the Reef: Safe Treatments

Me & Velvet Sickness on the Reef: Safe Treatments White spots, mucus coating, rapid weight loss: When Ich or Velvet disease (velvet disease) appear in a reef aquarium, every hour counts. Both diseases are caused by parasites that infest fish – while corals and invertebrates can be affected to varying degrees depending on the treatment. Therefore, it's crucial not only to know "what helps," but also "what is demonstrably safest for the reef." The following overview categorizes the typical symptoms, explai ... Read more »

Frag Tank Setup Guide for Coral Propagation

Frag Tank Setup Guide for Coral Propagation Frag tank setups are designed to stabilize conditions for small coral colonies (frags) while keeping growth predictable. Whether you’re growing SPS, LPS, or soft corals, the goal is the same: consistent water quality, low stress handling, and the right light and flow from day one. Start with the right tank and stability Choose a tank size you can maintain easily—many successful frag systems start modestly and scale up. Focus on stable salinity and temperature mor ... Read more »

Coral Bleaching: Early Warning Signs and What to Do

Coral Bleaching: Early Warning Signs and What to Do Coral bleaching—when corals lose their colorful symbiotic algae—often reflects heat stress and other environmental pressures. While some reefs can recover, repeated or severe bleaching events can cause long-term damage, including slower growth, disease vulnerability, and declines in fish and tourism. With ocean temperatures rising and marine heatwaves becoming more frequent, early recognition and rapid response are increasingly important for reef resilience. Early ... Read more »

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