Algae in freshwater aquariums isn't always a nuisance. It’s a clear signal about lighting, nutrients, plant health, organics, and overall tank stability. In this episode of The Aquarist’s Edge, Art flips the script on aquarium algae and shows you how to “read” what your tank is telling you, identify common algae types (green hair algae, black beard algae, diatoms, green film algae, and cyanobacteria), and reduce algae naturally without wrecking your aquarium balance. You’ll walk away with practical steps to control algae long-term, support healthy plant growth, and keep your aquarium looking great with realistic maintenance.