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Reefco Aquariums

Why Is My Coral Not Growing?

Why Is My Coral Not Growing?

Wondering why your coral isn't growing? From lighting and water chemistry to nutrients, flow, pests and stability, this guide walks through the most common causes of stalled coral growth and explains what to check before making changes to your reef tank.

September 28, 2026
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Can Zero Phosphate Hurt Your Reef Tank? What Happens When Nutrients Get Too Low?

Can Zero Phosphate Hurt Your Reef Tank? What Happens When Nutrients Get Too Low?

Zero phosphate isn't always a sign of a healthy reef. Learn why corals need measurable nutrients, how to spot phosphate starvation, what causes ultra-low levels, and how to safely bring nutrients back into balance without triggering an algae outbreak.

September 21, 2026
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Toadstool Coral Care Guide: Lighting, Flow, Feeding and Common Problems

Toadstool Coral Care Guide: Lighting, Flow, Feeding and Common Problems

Learn how to keep toadstool corals healthy and thriving with this practical care guide. We cover lighting, flow, feeding, placement and common problems, including shedding, shrinking, browning and why your toadstool coral may suddenly stop opening.

September 15, 2026
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10 Things to Know About Calcium Reactors

10 Things to Know About Calcium Reactors

Calcium reactors can transform the way you maintain calcium and alkalinity in a demanding reef aquarium. From understanding CO2 and reactor pH to balancing effluent flow, discover 10 essential things every reef keeper should know before installing one.

September 09, 2026
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From Tank to Teaching Tool: Classroom Activities With a Saltwater Aquarium

From Tank to Teaching Tool: Classroom Activities With a Saltwater Aquarium

A reef tank is more than classroom decor, it's a living science lesson. From nitrogen cycling to water testing rotas, discover how a saltwater aquarium teaches chemistry, biology, and responsibility in ways textbooks never could, all while sparking genuine student curiosity.

August 29, 2026
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