Kent Supplement Super Iodide 16 Oz.

Iodine is believed to be essential for coral, freshwater, and marine invertebrates to help them form and mold their shells.  Aquariums with protein skimmers will remove Iodine from the tank. This product should be used to restore Iodine to its proper levels. 

Directions: Add one teaspoon per 50 gallon tank capacity every week or eight drops per 50 gallons each day. Daily dosing is the preferred method. May be dosed with Kalkwasser Mix. Warning: Not for human consumption. Keep out of the reach of children. In case of accidental ingestion, contact a physician or poison control center immediately.