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What Is a Refugium and Why It Benefits Your Reef

 What Is a Refugium and Why It Benefits Your Reef

A refugium is a dedicated compartment in a reef aquarium designed to support beneficial marine life—especially microalgae, macroalgae, and small “cleanup” organisms like copepods and amphipods. Because it’s run differently from the main display, it can act as an additional layer of biological filtration without stressing your reef’s core habitat.

In many reef tanks, the main challenge isn’t only keeping ammonia and ... Read more »

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