Glossary

Alkalinity

Water's capacity to neutralize acid. Reported as dKH, meq/L, or ppm CaCO₃.

Alkalinity is the most-tested parameter in reef chemistry because coral calcification consumes it. Target: 8–10 dKH for mixed reefs, 7.5–8.5 dKH for SPS-dominant tanks running low-nutrient.

Recommended

Test kits for alkalinity.

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