Red Sea Coral Pro is engineered for SPS-dominant reefs — elevated calcium (450 ppm), alkalinity (8.8 dKH), and magnesium (1340 ppm) compared to natural seawater. After mixing 80 gallons per week for a year, here is the assessment.

ICP consistency

Three batches tested via ICP-OES — all within 3% of label across all 28 elements. Zero detectable copper or aluminum spikes.

Verdict

A premium salt at a premium price — justified for SPS-focused reefs running heavy alkalinity consumption.

Related reef reading

Reef tools mentioned in this article

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Water Parameter Tracker

Log every reading. Catch problems before livestock notice.

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