Chalice Coral

Chalice Coral

Ready for some eye candy? Take a look at some of these awesome chalice corals. Chalice corals are stony corals that are best kept by intermediate hobbyists—those who have already mastered the basics of coral husbandry and have had success with Candy canes, Frogspawns, etc.

Chalice corals are available in a dizzying array of colors and go by names like Hell’s Eye, Hollywood Stunner, Miami Hurricane, Lucky Charms, Ultra Color, and the famously named Pink Floyd Chalice. These creative names reflect the vibrant and unique appearance of each variety.

Ideal habitat

Chalice Coral species are naturally found in reefs in the Red Sea, Indian Ocean, and the Pacific Ocean, and all across the northern and eastern coast of Australia. It is hard to pin down generic advice for keeping these gorgeous corals—like many things in this hobby—it depends. But here is an attempt at some general advice:

Lighting needs

They are photosynthetic corals—which means they have symbiotic zooxanthellae that help them make food. As such, they benefit from moderate lighting. Too much lighting can scorch them, too little light will cause them to starve slowly over time, although there are reports of certain varieties being very tolerant of low lighting (especially when well-fed). Dramatic changes in light from one day to the next (beyond the normal light/dark schedule) may stress them out. So…the recipe for success here for most is low to moderate, relatively consistent lighting.

Why are chalice corals sensitive to lighting changes? Their zooxanthellae require time to adapt to new light levels. Sudden increases in intensity can lead to photoinhibition or bleaching, where the coral expels its symbiotic algae, resulting in tissue recession or color loss. Conversely, too little light over time can cause slow decline.

How to acclimate chalice corals to new lighting: When introducing a new chalice coral or changing your lighting setup, acclimate them gradually. Start by placing the coral in a shaded or lower-light area of the tank and slowly move it to its final position over 1–2 weeks. Alternatively, use mesh screens or adjust your light intensity incrementally to avoid shock.

Consequences of skipping acclimation: Without proper acclimation, chalice corals may bleach, lose color, or show tissue recession. Early signs of light stress include faded coloration, tissue pulling away from the skeleton, or excessive algae growth on the skeleton. If you observe these, reduce light intensity and monitor recovery.

Water flow

They don’t have large, fleshy polyps, and will, therefore, do well in moderate currents.

Why moderate, indirect flow? Chalice corals prefer moderate, indirect water movement, which helps prevent detritus from settling on their surface and delivers nutrients without causing tissue damage. Too much direct flow can lead to receded tissue or even skeleton exposure, while too little flow allows debris to accumulate, increasing the risk of infection.

How to assess flow: Aim for gentle, swaying movement of the coral’s tissue, not forceful blasting. Signs of excessive flow include tissue recession or the coral retracting its edges. Signs of insufficient flow include visible debris collecting on the coral or poor polyp extension. Adjust powerheads or return outlets to achieve a balanced, indirect current.

Feeding

These stony corals are also animals and benefit from additional feedings. Check out this article on feeding your corals.

What to feed: Chalice corals accept small particulate foods such as reef roids, powdered coral foods, and finely chopped meaty foods. Target feeding with a pipette or turkey baster near the coral’s mouth is effective.

Feeding and lighting interaction: Regular feeding can help compensate for lower light levels, as chalice corals can derive more energy from food when photosynthesis is limited. However, overfeeding can lead to tissue swelling, excessive mucus production, or increased algae growth on and around the coral.

Signs of under- or over-feeding: Under-fed chalice corals may lose color or show slow tissue recession. Over-fed corals may appear swollen or develop algae issues. Adjust feeding frequency and quantity based on the coral’s appearance and tank nutrient levels.

Room to grow

Chalice species can create powerful sweeper tentacles, so give them room to grow, or they will try to create their own room…which means they’ll fight to the death.

Understanding sweeper tentacles and aggression: Chalice corals can extend sweeper tentacles several inches (often up to 2–4 inches, depending on the species) beyond their base, especially at night or when sensing nearby competitors. These tentacles can sting and damage neighboring corals, sometimes fatally. Aggression is often triggered by proximity to other corals or competition for space and light.

Planning for placement: To minimize coral warfare, leave at least 3–4 inches of space between chalice corals and other species. Monitor for signs of aggression, such as extended tentacles or tissue damage on nearby corals. The trade-off is maximizing tank space versus maintaining peace—err on the side of caution to protect your collection.

Ideal water parameters

Chalice corals require the standard aquarium water parameters for corals, including alkalinity and calcium to help them build their skeleton.

Why stability matters: Chalice corals are particularly sensitive to swings in alkalinity, calcium, and magnesium. Stable parameters are critical for healthy skeletal growth and stress resistance. Rapid or frequent changes can cause tissue recession, color loss, or even coral death.

Operational consequences of instability: If you notice sudden color fading, tissue pulling away from the skeleton, or slowed growth, check for recent parameter swings. Prioritize regular testing and gradual adjustments to maintain a stable environment.

Fragging and propagation

Fragging the chalice corals is simple, in that chalices generally respond well to fragging and that you simply cut the specimen and glue them onto a frag plug or rock. The challenging part is taking the equipment (like a Dremel or tile saw) to properly and easily cut through the tough skeleton made from calcium carbonate.

Post-fragging care: After cutting, dip the frag in a coral-safe iodine or antibacterial solution to reduce infection risk. Place new frags in a low-flow, low-light area of the tank for the first week to allow healing. Monitor for signs of infection, tissue loss, or slow healing. Avoid cutting too close to the edge of the coral, as this can slow recovery or cause tissue die-off. Handle frags gently to prevent unnecessary stress.

Want to learn more about coral fragging?

Do you have a chalice coral in your tank?

chalice coral from Mrcoral.com