components Carbon algal calcium and sea alga powder: helps the usage of feed and is a natural addition to improve condition. instruction for use 1 coffee spoon per kg feed, may be given every day, preferably in combination with Zell Oxygen and Optimix. description Viktus duif consists of 100% sea alga powder in its purest form. Because of its high content of iodine, action stimulators as iodine influences the thyroid gland, significantly influecing in its turn moulting.