Refugium is absolutely a great benefit to any saltwater aquarium. Refugium can be used to cultivate live food sources such as copepods and amphipods. Refugium also controls the growing area of macro-aglae that dissolves nitrate and phosphate in the water. Combining a built-in protein skimmer to maintain a safe organic levels while providing oxygenation. Water quality improves naturally and efficiently by this Hang On Refugium plus Protein Skimmer.

Recommended adding the 20" 36W Power Compact Light. With the lights on during the night, the macro-algae keeps consuming and processing CO2 continuously, thus, reducing common night time pH fluctuations.