Red Sea Complete Reef Care 4-Part, Part 3: Iodine & Potassium+
multi-part
Limited data
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Dosing
The maker doses this by schedule rather than by a fixed potency, so the calculator cannot use it. Follow the directions below.
How it’s used
Dose at 0.5x the Part 1 volume daily (e.g., Part 1 5 ml -> Part 3 2.5 ml per 100 L). No separate test; follows the weekly calcium result.
Cautions
• Always dose in numerical order Part 1 -> 2 -> 3 -> 4, 10 minutes apart
• Max daily rise: Ca 20 ppm, Alk 1.4 dKH (0.5 meq/L)
• Intended for systems WITHOUT a refugium/algae scrubber; use the 7-part program if you have one
• Dose all parts by Ca uptake only; Red Sea warns that dosing by alkalinity overdoses Ca and traces
Part of Complete Reef Care 4-Part
Sources
Contains K, B, I, Br, F. Red Sea publishes no per-ml concentration, so no effects; dose is purely ratio-based (0.5 x Part 1). Implied max would be 0.5 x 14.3 = ~7 ml/100 L/day if following the ratio, but that is not stated.