Iodion by Brightwell Aquatics is an extended activity, highly concentrated iodide solution which provides this vital element to hermatypic corals and other invertebrates harboring zooxanthellae, macroalgae and also to the health of fishes. Suitable for all levels of hobbyists and obtained from the highest quality iodide sources. Marine biologist formulated.
Basic Instructions: Shake product well before using. Add 5 ml (1 capful) of product per 50 gallons of aquarium water every two- to three-days or as needed to maintain the iodine concentration within a range of 0.04 - 0.06 ppm. When used in this fashion, 500 ml treats up to 5,000 gallons