Salifert Iodine 500 ml.

Corals might require iodine as a de-toxifier, as a protection against uv-radiation and as a natural defense against many parasites.
Iodine is present in NSW (Natural Sea Water) in a very low concentration (0.06 mg/L or 0.06 ppm). Iodine occurs in NSW as different species. These include iodide, iodate, molecular iodine and hypoiodite.
Generally when we say iodine we mean one or more iodine species without a clear distinction being made. NSW contains predominantly iodate and to a lesser extent iodide. There is however a misconception among many hobbyists that iodide predominates in NSW.
Research by Salifert and universities has proved this to be untrue Salifert's Natural Iodine supplement contains a large portion iodate and also some iodide in similar proportions as NSW.
All ingredients are of a pharmaceutical quality or even better. This ensures that no unwanted elements are added to your valuable aquarium.

Directions:
Shake before use.
Regular maintenance:
Dose 5 ml per 100 liters (25 gallons) once every 2 or 3 weeks.
Adjust dosage according to individual requirements (use an iodine test, e.g., Salifert?s Iodine Profi-Test). Every 5 ml per 100 liters (25 gallons) will increase the iodine concentration (that is iodide +iodate) by approx. 0.04 mg/L.