Acropora florida Propagation Guide

Propagating Acropora florida, a hardy branching SPS coral, by fragmentation: cutting branch tips, mounting frags, and maintaining the stable chemistry, high light and flow that fragments need to heal and grow.

Overview

Acropora florida is a branching stony coral in the family Acroporidae with prominent axial corallites and a peripheral spread. Like all Acropora, it grows as a colony of small polyps that share tissue and build a calcium carbonate skeleton, with symbiotic Symbiodinium algae providing energy through photosynthesis. Its branches are fragged at the tips in the same way as other SPS corals.

Reproductive Mode

Acropora reproduce sexually by releasing gametes and asexually when broken branches reattach and grow into new colonies. Aquarium propagation uses fragmentation because each frag carries the parent's genetics and resumes growth once secured to a surface.

Fragging / Asexual Propagation

Choose a healthy, well-coloured branch tip from an established parent colony.
Cut or snap the branch cleanly with bone cutters or a coral saw.
Glue the frag to a plug or rock with cyanoacrylate or epoxy.
Place the frag in moderate light and flow until tissue grows over the cut, then raise it.
Dip and quarantine new frags before adding them to a display.

In a well-maintained reef aquarium, finger-sized fragments can grow into much larger colonies within one to two years, so a single parent colony yields many frags over time.

Conditions for Propagation

Fragments need stable conditions to heal and grow. Acropora are especially susceptible to bleaching when stressed, caused by the loss of their zooxanthellae, so temperature, salinity, alkalinity, calcium and magnesium must stay steady. High light and high flow support the dense skeletal growth this branching form depends on.

Sexual Reproduction

Wild Acropora take part in annual mass-spawning, releasing gametes into the water for external fertilisation and larval dispersal. This is rarely reproduced in home systems, so hobby propagation relies on fragmentation.