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What one dose does
PARAMETER
1 ml / 100 L
Calcium
+0.3698 ppm
To raise calcium by 20 ppm in 100 L: 54.1 ml.
Maker’s daily maximum: 135 ml per 100 L (135 ml for 100 L).
How it’s used
Mix 514 g (2.5 cups) into a 1-gal jug 4/5 full of RO/DI, top to 1 gal. Correct to target first, then dose the 5-day calculator amount divided by 5 daily, 1:1 with the alk solution; adjust +/-10% per day by trend.
Cautions
• Raise Ca no more than ~50 ppm per day
• Check Mg is 1200-1350 ppm if Ca won't rise
• Dose into high flow away from corals
Part of BRS 2-Part
Sources
maxDose derived from BRS limit of +50 ppm Ca/day (50/9.77 ml per gal). Worked example on BRS page: 102.3 ml over 5 days raises 100 gal by 10 ppm (= 9.77 ppm per ml/gal). Purity stated >=99% (BRS Q&A).