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What one dose does
PARAMETER
1 ml / 100 L
Calcium
+1.1 ppm
To raise calcium by 20 ppm in 100 L: 18.2 ml.
How it’s used
Dissolve 2 kg in 3 L RO water in canister 1, add Trace 1 and Trace 2 (25 ml each standard), fill to 5 L. Measure Ca, dose a test amount, re-measure, then set a daily dose equal to measured consumption; retest daily at first and adjust over 2-4 weeks. Target 400-440 mg/L.
Cautions
• Solution heats up strongly while dissolving
• Always add salt to water, never water to salt
• Never mix Ca, Mg and KH salts in one canister
• Dose Mg first, then Ca, then KH, ~10 min apart
Part of Balling Light
Sources
Standard recipe (HTU 2021 EN + 2023 DE): 2 kg salt dissolved in 3 L RO then topped to the 5 L canister (= 400 g/L for Ca and Mg mix, 100 g/L for Carbonate mix: 500 g per 5 L). Ingredients: calcium chloride dihydrate + calcium chloride + biopolymers (set page/catalog). Dosing-order spacing conflict: DE/EN shop pages say ~10 min between parts; 2021 EN HTU says at least 2-3 min. Recommended Ca: 400-440 mg/L (2021 EN HTU, DE shop) vs 380-420 mg/L (2023 DE HTU). No max daily dose published.