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What one dose does
PARAMETER
1 ml / 100 L
Calcium
+0.7143 ppm
To raise calcium by 20 ppm in 100 L: 28 ml.
How it’s used
Dose the same volume as #1 (5-10 ml per 100 L/day guideline). If Ca drifts over a week, set #2 separately from Ca use: 1.4 ml/100 L/day per 1 mg/L daily Ca loss.
Cautions
• Dose #1 and #2 at separate, well-flowing spots; never mix the two parts outside the tank
• #1 can crystallize when cold: warm bottle to ~45 C; below 20 C dilute both parts 1:1 with RO so volumes stay equal
• Long-term use slowly raises salinity: periodically swap a little tank water for RO
Part of Essentials SPS
Sources
Also supplies Mg, K, Sr, B, Br plus trace Co, Fe, Li, Mn, Mo, Ni, Rb, V, Zn, but ATI publishes no per-ml amounts for these, so only Ca is modelled. Equal-volume dosing delivers ~7.4 mg/L Ca per 1 dKH (74,000/10,000).