Stir approx. 1.5 measuring spoons into 100 ml (3 oz.) of reverse osmosis water and let it hydrate for one to two hours, stirring occasionally. Next stir in Tropic Marin Pro-Coral Phyton or Pro-Coral Zooton and let it hydrate for another 30 minutes. Now add to aquarium and blend. Pure Pro-Coral Reef Snow solution (without plankton substitute) can be stored for two weeks at room temperature. The size of Pro-Coral Reef Snow particles formed can be influenced by varying the dosage from one to two measuring spoons per 100 ml. Less Pro-Coral Reef Snow will form smaller particles' more Pro-Coral Reef Snow will form larger particles.