Watermelon Chalice (Echinophyllia sp.): Propagation Guide

Propagating the designer Watermelon Echinophyllia chalice by cutting plate sections with an eye each, plus iodine dip, placement, and aggression notes.

Overview

The Watermelon Chalice is a high-color designer morph of the genus Echinophyllia, a colonial large-polyp stony coral native to the Indo-Pacific. Like other Echinophyllia it is partly encrusting and partly forms laminate plates, with corallites usually level with the surface on the upper face. The 'Watermelon' name refers to the red, green, and pink coloration prized in the aquarium trade.

Reproductive Mode

Echinophyllia chalices reproduce sexually by gamete release in the wild, but designer morphs such as Watermelon are perpetuated entirely by asexual fragmentation so the color strain is preserved. The fluorescent corallites mark the live polyps each frag must keep.

Fragging / Asexual Propagation

The morph is fragged by cutting sections of the encrusting plate, ensuring at least one eye per frag, avoiding cutting through an eye, and leaving a mouth to feed in each piece. Because cut edges are prone to bacterial infection, an iodine dip is recommended before the frag is glued to a plug to heal.

Conditions for Propagation

Chalices do best under lower-moderate lighting, around 100 PAR, with moderate to lower flow that keeps debris off the tissue. Stable, low-nutrient reef parameters help maintain the intense color of designer morphs while the frag re-encrusts.

Common Challenges

High-color chalices grow slowly and can lose their vivid pigments under unstable or excessive light, so lighting consistency matters. Bacterial infection of cut edges and stinging interactions with neighbors are the other principal risks during the healing phase.