Nualgi aquarium contains special and trace elements that are deficient in a typical aquarium. Its nano formulation causes a diatom algae bloom within 3 hours of application which triggers a large population of zooplankton - a live fish food. Diatom algae also produces oxygen thus improving do levels in the water. Reef tanks get the added benefit of "explosive" coral growth and all tanks benefit from healthier fish and less frequent water changes.