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Saltwater Aquarium Guide Reef-keeping magazine
Coral Care

How to Acclimate New Corals: Drip, Dip, and Light Acclimation

A step-by-step protocol for safely introducing new coral frags to your reef without bleaching or pest contamination.

Green branching coral with pale tips growing among purple coralline rock
Photo: David Clode / Unsplash
In this article
  1. Step 1: Drip acclimate
  2. Step 2: Coral dip
  3. Step 3: Light acclimation

New corals face three threats during transition: water chemistry shock, light shock, and hitchhiker pests. A proper acclimation protocol addresses all three.

Step 1: Drip acclimate

Drip-acclimate over 60 minutes to match parameters gradually. Sudden chemistry shifts cause tissue recession.

Step 2: Coral dip

Use Bayer or CoralRx dip for 5–10 minutes to kill aiptasia eggs, flatworms, and red bugs.

Step 3: Light acclimation

Place new corals at substrate level for 1 week, then move up gradually over 2 more weeks.