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- Advice for beginners
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Fluorine
Fluoride (F⁻)
What to do when the level is too high?
Risks: inhibition of coral growth, dull tissues, increased sensitivity to light and parasites.
Measures: reduce the concentration through regular partial water changes (ideal: bring back to 1.2–1.4 mg/L), gradually dilute and monitor the color of the corals.
What to do when the level is too low?
Risks: reduced growth, discolored tips, softened skeleton, sensitivity to parasitic attacks.
Measures: gradually add a suitable fluoride source (trace supplement containing fluoride), distribute the intake over several days, regularly check until 1.2–1.4 mg/L.
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