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What one dose does
PARAMETER
1 ml / 100 L
Calcium
+0.0087 ppm
Alkalinity
+0.0012 dKH
To raise calcium by 20 ppm in 100 L: 2,312 ml.
How it’s used
Pre-adjust Ca/alk/Mg, then mix into top-off water: 1/2 tsp per gal (low demand), 1 tsp (medium), 1.5 tsp (high; saturation). Let settle 30 min, draw only clear liquid via ATO into high flow, keep pH rise under 0.2; tune strength by daily Ca/alk tests.
Cautions
• 1.5 tsp per gal is saturation; more just settles out
• Do not overmix: air contact cuts potency
• Use a pH controller to guard against overdose
• Keep Mg/trace additives separate (precipitation)
Sources
Conflict/likely bug: the BRS calcium calculator's 'Limewater / Kalkwasser Solution (Saturated)' option uses 2.1 ppm Ca per ml/gal, ~10x the stoichiometric value for saturated limewater (~0.23 ppm per ml/gal). Do not import that constant. Effects here are derived (see notes on each).