Red Sea Iodine+ (Trace-Colors A; formerly Reef/Coral Colors A)
iodine
Manufacturer data
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What one dose does
PARAMETER
1 ml / 100 L
Iodine
+0.03 ppm
To raise iodine by 0.02 ppm in 100 L: 0.67 ml.
Maker’s daily maximum: 1 ml per 100 L (1 ml for 100 L).
How it’s used
Dose daily in proportion to calcium: 1 ml per 100 L for every 20 ppm of Ca added/consumed (i.e., 1 ml per 10 ml of Calcium+). ULNS tanks instead dose to measured iodine uptake (4-day test method). Test Ca or iodine weekly.
Cautions
• Max daily rise: iodine 0.03 ppm, potassium 10 ppm, iron 0.05 ppm
• Overdose: change 50% of the water (25% for Potassium+) and cut the dose by 50%
• Many trace elements are toxic above natural seawater levels; dose only to measured demand
Part of Trace-Colors ABCD
Sources
maxDose derived from the 0.03 ppm/day iodine limit (= 1 ml per 100 L/day). Red Sea target (NSW): iodine 0.06 ppm, bromine 65 ppm, fluorine 1.3 ppm. A forum report cited a Red Sea video at 1 ml per 10 ml Foundation A; that equals the manual's 1 ml per 20 ppm Ca since Calcium+ is 2 ppm/ml. A retailer's 1:20 ratio conflicts and was not used.