D d h2ocean pro reef sticks 70g have been designed to provide a nutritional diet for all marine fish and corals in the aquarium they contain a blend of specially selected marine fish and shellfish extracts chosen to have a high digestion capacity they have a complete balanced amino acid profile and contain our unique soluble protein feeding triggerr to use r the sticks can be used whole crumbled or mixed into a paste as the sticks soften they release a fine particle cloud into the water