Euphyllia glabrescens (Holy Grail) | L

Euphyllia glabrescens, commonly known as the Holy Grail coral, is a large-polyp stony (LPS) coral admired for its long, graceful tentacles and striking appearance. This large specimen is perfect for marine aquarists looking to add dynamic movement and vibrant colour to their reef tanks.

Lighting: Moderate to high lighting is recommended to support healthy growth and vibrant colours. LED, T5, or metal halide lighting systems are suitable, but avoid sudden intense light exposure to prevent bleaching.

Water Flow: Moderate, indirect water flow is ideal. Strong currents can damage the delicate tentacles, while low flow may lead to detritus accumulation.

Placement: Position the coral in a location with enough space to allow tentacle extension without touching neighbouring corals, as Euphyllia glabrescens can exhibit aggressive sweeper tentacles. Adequate spacing minimises coral warfare and promotes reef harmony.

Care Level: Moderate. Requires stable water parameters and regular monitoring. Suitable for aquarists with some experience in LPS coral husbandry.

Diet: Primarily photosynthetic via symbiotic zooxanthellae but benefits from supplemental feeding of meaty foods such as brine shrimp or specialised coral foods once or twice weekly.

Reef Compatibility: Yes, with adequate spacing from other corals to prevent aggression.

Additional Notes: Maintain stable water chemistry with parameters typical for reef aquariums: temperature 24-27°C, salinity 1.023-1.025, calcium 400-450 ppm, alkalinity 8-12 dKH, and magnesium 1250-1350 ppm.