Powdery food dedicated for Ricordea corals. Instructions: prepare a small container and fill it with 20ml of water from the tank. Add one measuring spoon of Ricco Food powder and mix it for 1 minute. Pour the contents into the aquarium or use syringe / pipette to feed specific coral. Use one spoon per 100L (27 US gal). We recommend to dose food at night or when the lights are switched off.