How to Frag and Propagate Corals

Fragging and propagating corals is a valuable skill for reef aquarists, allowing you to grow new colonies, share corals with fellow hobbyists, and reduce the impact on wild reefs. Here’s a step-by-step guide on how to frag corals safely and effectively.

1. Choosing the Right Coral for Fragging

Some corals are easier to frag than others. Commonly fragged corals include:

• Soft Corals (Zoanthids, Mushrooms, Leather Corals) – Easy to cut and attach.

• LPS (Large Polyp Stony) Corals (Frogspawn, Torch, Hammer) – Require careful cutting between polyps.

• SPS (Small Polyp Stony) Corals (Acropora, Montipora) – Fragged using precise cutting techniques.

2. Tools and Materials Needed

• Bone Cutters or Frag Saw: For cutting stony corals.

• Scalpel or Sharp Blade: Best for soft corals.

• Glue or Epoxy: For attaching frags to plugs or rock.

• Frag Plugs or Small Live Rock Pieces: Used to mount new coral frags.

• Coral Dip: Helps prevent infection and remove pests.

• Protective Gloves & Eye Protection: Ensures safety when handling corals.

3. Fragging Process

Soft Corals

1. Use a scalpel or sharp blade to cut a portion of the coral.

2. Attach the frag to a frag plug using rubber bands, glue, or toothpicks.

3. Place in a low-flow area until fully attached.

LPS Corals

1. Identify a natural separation between polyps.

2. Use bone cutters or a dremel saw to carefully cut through the skeleton.

3. Rinse the frag and dip it in a coral dip to reduce infection risk.

4. Attach to a plug and place in a moderate flow area.

SPS Corals

1. Cut a small branch or encrusting portion using bone cutters or a frag saw.

2. Rinse and dip in a coral dip solution.

3. Glue the frag to a plug or live rock and secure it in high-flow areas for rapid healing.

4. Healing and Growth

• Keep frags in stable water conditions with moderate lighting and flow.

• Avoid moving frags too often; allow time to attach and recover.

• Regularly check for pests and signs of stress.

5. Sharing and Selling Frags

Once frags have healed and started growing, you can share them with fellow reef keepers or sell them to local hobbyists or stores. Always ensure that frags are pest-free before trading.

Final Thoughts

Fragging corals is a great way to sustainably grow your reef tank while promoting conservation. With proper tools, techniques, and care, you can successfully propagate corals and contribute to the thriving reef-keeping community.