Galaxea Coral

WYSIWYG - 7cm

Galaxea corals are striking large polyp stony (LPS) corals known for their bright colours and flowing tentacles. They can make an impressive feature coral in a reef aquarium, but they are also well known for their long sweeper tentacles, which can sting nearby corals, so careful placement is essential.

Lighting

Galaxea corals prefer moderate lighting and generally adapt well to a range of reef aquarium lighting systems. Avoid sudden changes in light intensity and acclimate new specimens gradually.

Flow

Provide moderate water flow. Enough flow should be present to gently move the tentacles and prevent debris from settling on the coral, but avoid excessive direct flow that may prevent full polyp extension.

Feeding

Although Galaxea corals receive much of their energy from photosynthesis, they can benefit from occasional feeding.

Placement

Galaxea corals can be placed:
On the sand bed
Lower to middle sections of the rockwork
Areas with moderate light and flow
Be sure to allow plenty of space around the coral due to its aggressive nature.

Tank Mates

Galaxea is considered an aggressive coral. It produces long sweeper tentacles that can extend several inches beyond the colony and sting neighbouring corals.
Allow generous spacing from other corals.
Avoid placing delicate LPS or SPS corals within reach of its sweepers.
Monitor for nighttime sweeper extension.

Final Thoughts

Galaxea corals are hardy, colourful, and relatively easy to care for, making them popular among reef keepers. Their vibrant appearance and flowing tentacles can create a stunning display, but their aggressive behaviour means thoughtful placement is crucial. With stable water conditions, moderate flow, and adequate space from neighbouring corals, a Galaxea can become a beautiful and eye-catching addition to your reef aquarium.