Extreme Corals News and Updates

Learn what you need to start your first coral reef tank, including tank size, lighting, filtration, saltwater, testing, cycling, livestock choices, and beginner coral planning.

Learn how reef keeping evolved over the decades, from early fish-only systems to modern coral aquariums, and discover the coral types that shaped the hobby.

Learn how coral coloration works and how to improve coral color in your reef tank with better lighting, water quality, nutrients, feeding, and stability.

Learn how water flow impacts coral health, feeding, waste removal, and growth in reef tanks, with practical tips for SPS, LPS, soft corals, and mixed reefs.

Learn what a calcium reactor is, how it works, the best calcium reactor types for reef tanks, and how it helps maintain calcium, alkalinity, and coral growth.

Learn how aquarium cleaning magnets can leak heavy metals into a reef tank, the warning signs of a failing magnet, and safer ways to clean your aquarium without risking coral health.

Learn how to place corals in a reef tank using lighting, flow, aggression, spacing, compatibility, aquascape zones and long-term coral growth planning.

Learn the differences between soft corals, LPS corals, and SPS corals, including care requirements, placement, lighting, flow, feeding, and beginner reef tank tips.