Tubbs Blue Zoa Propagation Guide

How to propagate the slow-growing deep-blue Tubbs Blue Zoanthus morph by fragging the colonial mat, with palytoxin safety precautions for handling.

Overview

Tubbs Blue is an iconic deep-blue Zoanthus morph with a neon-blue ring, regarded as a slow-growing collector zoa. It belongs to the genus Zoanthus (family Zoanthidae) and forms colonies of button polyps connected by a shared tissue mat. The colony is photosynthetic; because growth is slow, propagation calls for patience and careful timing once the colony has built up enough polyps.

Reproductive Mode

Tubbs Blue is increased asexually. New polyps bud from the connecting stolon, but the colony enlarges slowly, so fragging is best done from a well-established mat to avoid setting the parent back. Asexual division preserves the deep-blue coloration in daughter colonies.

Fragging / Asexual Propagation

Following Reef Builders, score the tissue around the polyps with a razor blade and trace the cut with coral cutters until the section frees, staying close to the base. Because this morph is slow, take only a few polyps at a time so the parent colony retains enough mass to recover.

Wear gloves and eye protection before any out-of-water step.
Cut the stolon mat between polyps with a fresh razor blade.
Trace the line with coral cutters until the frag separates near the base.
Dry the plug and frag base, add a small dab of glue, and seat the frag gently.
Return it, baster off mucus, and allow extra time for slow re-anchoring and budding.

Conditions for Propagation

Lighting: 50-150 PAR (medium)
Flow: low
Temperature: 24-26 degC
pH: 8.1-8.4; salinity 1.024-1.026
Nitrate below 15 ppm, phosphate below 0.1 ppm

Palytoxin Safety

Palytoxin is documented in Zoanthus and Palythoa, and aquarists have been poisoned handling colonies at home. There is no antidote, so protective equipment is the only reliable safeguard during propagation.

Common Challenges

Slow growth makes Tubbs Blue intolerant of overzealous fragging; taking too many polyps stalls the parent. Excess glue on the skirt, deep cuts, and unstable parameters also cause failures. Frag conservatively, use minimal glue, and keep chemistry steady through the long recovery.