Euphyllia cristata (Joker) is a captivating large polyp stony (LPS) coral prized for its distinctive tentacle formations and vibrant colours. This large specimen is a stunning addition to any mature reef aquarium, offering dynamic movement and texture.
Lighting Requirements: Moderate to high lighting is recommended to maintain optimal health and coloration. LED or T5 lighting systems that provide a balanced spectrum are ideal.
Water Flow: Moderate, indirect water flow is best to ensure the tentacles can extend fully without damage. Avoid strong direct currents that may cause tissue recession.
Placement: Position this coral in a mid to lower reef area with ample space around it to prevent aggressive interactions. Euphyllia cristata can extend sweeper tentacles, so maintain adequate spacing from neighbouring corals.
Care Level: Intermediate. Requires stable water parameters and consistent maintenance. Regular monitoring of calcium, alkalinity, and magnesium levels is essential for skeletal growth.
Diet: Primarily photosynthetic via symbiotic zooxanthellae, but benefits from occasional feeding of meaty foods such as brine shrimp or specialised coral foods to promote growth and vibrancy.
Reef Compatibility: Yes, with adequate spacing due to its potential for aggression through sweeper tentacles.
Minimum Tank Size: 90 litres (20 gallons) or larger to provide sufficient space and stable water conditions.
Origin: Not Provided.
Maximum Size: Typically grows up to 20 cm in diameter under optimal conditions.
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