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What one dose does
PARAMETER
1 ml / 100 L
Alkalinity
+0.056 dKH
Calcium
+0.4 ppm
Magnesium
+0.019 ppm
To raise alkalinity by 1 dKH in 100 L: 17.9 ml.
Maker’s daily maximum: 25 ml per 100 L (25 ml for 100 L).
How it’s used
Start 5 ml per 100 L/day; raise the daily dose by 2.5 ml per 100 L each week until Ca and Alk hold steady. Then monitor mainly calcium (more sensitive to test), alkalinity occasionally.
Cautions
• Do not exceed 25 ml per 100 L per day
• Set Ca/Alk/Mg to target first (Tropic Marin suggests Original Balling A for Ca, Part B for Alk, Bio-Magnesium for Mg)
• If Ca and Alk drift apart (non-coral consumption), correct with the single-element products per Tropic Marin's correction chart
• Already contains all K+ and A- Elements trace elements; do not stack extra trace solutions without reason
• Contains no potassium; dose K separately if testing shows a deficit
Sources
Tropic Marin's product page gives regimen only, no concentration. Concentration from Bulk Reef Supply spec block ('per 500 mL': 2,800 dKH, 20,000 mg Ca, 950 mg Mg). Reading it as per-bottle (not per-litre) is the only interpretation that gives the balanced Ca:Alk ratio (0.40 mg/L : 0.056 dKH = 7.1 mg Ca per dKH, stoichiometric 7.15) and it is corroborated by Tropic Marin's lab calculator (calc-minerals, now titled Ready2Reef) which states 5 ml/100 L = 2 mg/L Ca and 0.28 dKH with the identical 5/25 ml start/max. A retailer snippet also listed 390 mg Sr and 17 mg I per 500 ml (unverified). Organic calcium salts, no NaCl by-product.