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Gerald Bassleer’s YouTube video (French) explains marine white-spot disease (Cryptocaryon/’ich marin’) for reef aquariums, covering diagnosis, differential signs, parasite life cycle, and practical interventions. He emphasizes finding root causes (temperature swings, water quality, stress), strict quarantine of new fish (20–28 days), early detection and combined treatments including freshwater baths, targeted medications (formal/fornamol/protamol), and a functional feed (BioFishFood Matrine containing Sophora/matrine) fed exclusively for at least 20 days. Reef-specific constraints (coral/invertebrate sensitivity) and mechanical/UV removal, siphoning, temperature/light manipulation, and filter intake placement are also discussed.

Questions this video answers

20–28 days.

At least 20 days (feed only this food).

About 7–10 days (cycle length depends on temperature).

Increase by about 2–3°C (with attention to oxygen and invertebrate tolerance).

Approximately 5 cm above the bottom.

Chapters

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Fish disease case nr. 360 Apistogramma with 3 different parasites and tubercles in the organs

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