KENT MARINE STRONTIUM & MOLYBDENUM provides these elements needed for proper growth and health of hard and soft corals in an easy to dose liquid form. Strontium is very similar to calcium as invertebrates use it to form skeletons structures. Coral traditionally respond by staying open longer as it aids tissue adhesion to skeleton.
Directions
Add 5 ml (1 tsp) per 50 gallons of tank capacity every four days.