Sandy The Bio-support Starfish – 3 Pack

REDUCES LEVELS OF NITRATES AND PHOSPHATES: Sandy’s bio-support function helps reduce phosphates that can promote overgrowth of algae, which can starve the tank of critical oxygen at high levels. She also controls nitrates, which are toxic to fish and create excessive stress on the aquatic environment. Performing these functions is crucial to ensuring the well-being of the entire aquarium ecosystem.