Torch Coral Care Guide (Euphyllia glabrescens) | LPS Coral Information - Reef Aquarium Tips

The Torch Coral (Euphyllia glabrescens) is one of the most popular large polyp stony (LPS) corals in reef aquariums due to its flowing tentacles, bright coloration, and movement in the current. It is highly sought after in the reef aquarium hobby across Australia for its unique appearance and ability to create a true showpiece coral display.
Torch corals are available in a range of colours, most commonly gold, brown, and white-tipped varieties, with some rare strains showing green fluorescent tentacles. At times, they can resemble anemones or even elegance corals (Catalaphyllia), especially when fully extended under ideal reef lighting.
Torch Coral Care Requirements
Although Torch Coral can be moderately challenging compared to other LPS corals, once established in a stable reef tank, it becomes quite hardy and rewarding to keep.
Within the Euphyllia genus, torch corals are generally considered the most sensitive species. For comparison:
- Frogspawn coral (Euphyllia divisa) is typically the easiest to care for

- Hammer coral (Euphyllia ancora) sits in the middle range

- Torch coral (Euphyllia glabrescens) is the most demanding
This makes proper placement, flow, and stability essential for long-term success.
Placement, Space & Aggression
Torch corals require plenty of space due to their long “sweeper” tentacles, which can extend and sting nearby corals.
- Recommended spacing: 15–20cm minimum from other corals

- Avoid placing near non-Euphyllia LPS or SPS corals

- Can be grouped with other torch corals safely to form a “torch garden”
Torch corals are compatible with each other, meaning multiple torch corals can be placed close together or touching, allowing reef keepers to build stunning flowing coral colonies.
Flow & Lighting Conditions
Torch corals prefer moderate, indirect water flow that allows their tentacles to gently sway in the current.
- Too little flow may cause detritus buildup

- Too much flow can stress the coral and cause it to retract

- Ideal flow is a gentle back-and-forth movement
Lighting should be moderate, with gradual acclimation to avoid bleaching or stress.
Feeding & Nutrition
Torch corals are photosynthetic but benefit greatly from supplemental feeding.
They can capture:
- Zooplankton

- Fine particulate foods

- Leftover fish food in the water column
Target feeding can improve growth rate, coloration, and overall health when done consistently in a reef aquarium.
Final Thoughts on Torch Coral in Reef Aquariums
Torch coral is an excellent addition to a saltwater aquarium for hobbyists who are prepared to provide stable water parameters, correct placement, and moderate care attention. With the right setup, they can become one of the most visually striking LPS corals in any reef tank.
Proper research, spacing, and understanding of coral aggression are key to maintaining a healthy and thriving reef aquarium ecosystem.

Torch Coral Care: Brown Jelly Disease, Bacterial Balance & Long-Term Success

Many reef keepers experience difficulty maintaining Torch Coral (Euphyllia glabrescens) long term — and I’ve been no exception. After over 10 years in the reef aquarium industry working with LPS corals, I’ve found that one of the fastest and most common causes of Torch Coral loss is brown jelly disease and protozoan-related infection.

This issue often presents as rapid tissue recession, brown slime, and coral collapse, and it can wipe out a torch coral within a very short period if not addressed early.

What Causes Brown Jelly in Torch Corals?

In my experience, brown jelly events are closely linked to a breakdown in microbial balance within the reef aquarium. Specifically, it often occurs when harmful bacteria and protozoans outcompete beneficial bacteria that normally help protect coral tissue.

This imbalance is typically triggered by:

Coral stress (handling, shipping, or parameter swings)

Sudden changes in water chemistry

Instability in nutrients or bacterial populations

Poor biological diversity in the aquarium system

Once this imbalance occurs, Torch Coral becomes highly vulnerable to infection and tissue loss.

Long-Term Torch Coral Stability: Bacterial Balance is Key

If you love keeping Torch Corals, the real long-term solution is not just treatment — it’s biological stability and bacterial balance within the aquarium.

One product I personally use to help support this balance is:

Dr. Tim’s Eco-Balance

This type of bacterial supplementation helps restore and maintain a healthier microbial environment, supporting beneficial bacteria that compete against harmful organisms responsible for brown jelly disease.

How to Treat Early Signs of Brown Jelly

If your Torch Coral is showing early signs of brown jelly:

Remove the coral immediately from the display tank

Siphon off as much infected tissue and slime as possible

Perform a coral dip (refer to our dipping guide):

https://www.aquamarineaquaristic.com.au/blogs/aquamarineacademy/how-and-why-should-you-dip-your-corals

Dose the full recommended amount of bacterial support according to the product label

If using bacterial support as a preventative measure, a small dose after a water change can help maintain stability in the system.

Water Chemistry & ICP Testing

Another major factor in Torch Coral health is trace element balance. Low levels of key elements such as iodine and fluoride can increase coral stress and make infections like brown jelly more likely.

For best results, I strongly recommend regular ICP testing using:

Triton ICP Testing

ICP testing helps identify deficiencies or imbalances in trace elements so they can be corrected before they impact coral health.

Final Thoughts

Torch Corals are one of the most rewarding LPS corals in reef aquariums, but they require stability, proper bacterial balance, and careful observation.

With the right approach — stable parameters, strong beneficial bacteria, and proactive husbandry — Torch Corals can thrive long term and become a stunning feature in any reef tank.

Supporting Links

https://www.reef2reef.com/threads/torch-coral-care-guide-euphyllia-glabrescens⁠�.

https://www.bulkreefsupply.com/content/post/md-2016-10-euphyllia-coral-care-guide⁠�

https://www.reefbuilders.com/reef-coral-identification/euphyllia-glabrescens/⁠�

https://www.liveaquaria.com/product/1526/torch-coral-euphyllia-glabrescens⁠�