Reef Iodide™ is a concentrated (8,000 mg/L) stabilized potassium iodide source for reef aquaria that will restore and maintain iodide levels to those found in natural sea water. It is formulated to provide a safe source of iodide that will not convert to toxic free iodine under storage or reef conditions. Iodine is as toxic as chlorine and should never be used in a reef system. However, iodide is as safe as chloride.

Please note that each cap thread is approximately 1 mL, full cap is 5 mL. BEGINNER: Add 5 mL (1 capful) for each 200 L (50 gallons*) every other day. ADVANCED: Add 1 mL for each 80 L (20 gallons*) daily to raise iodide by 0.10 mg/L. If