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.
This is for the 500ml bottle, others sizes are available either in store or by request.