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Immersion Spa — Chemical Dosing Pro
Inputs
Pool Volume (gal)
Your spa is 2,950 gal.
Current Free Chlorine (ppm)
Target Free Chlorine (ppm)
Sanitizer Product
Liquid Chlorine 12.5% (generic)
Liquid Chlorine 10% (generic)
Liquid Chlorine 6% (generic)
Cal‑Hypo 65% (generic)
Dichlor 56% (generic)
Current pH
Target pH
Acid/Base Product
Muriatic Acid 31.45% (generic)
Dry Acid (Sodium Bisulfate)
Soda Ash (pH Up)
Current Total Alkalinity (ppm)
Target Total Alkalinity (ppm)
Current ORP (mV)
Target ORP (mV)
Water Temp (°F)
Calculate
Doses, ORP, Safety
Sanitizer (to raise FC)
—
pH Adjust (approximate)
—
Alkalinity Up
—
ORP Guidance
—
Safety & Tips
Start with ~75% of calculated pH adjustment, circulate 30 min, retest. For large FC jumps (>5 ppm) or TA changes (>40 ppm), split doses.