Toadstool Coral Care: The Gentle Giant

A Centrepiece Soft Coral

Toadstools (Sarcophyton spp.) are genuinely one of the best corals in the hobby. They grow into impressive specimens, polyps fully extended and swaying in the current. They're often the first coral visitors notice in a tank.

Basic Requirements

Light: Moderate — PAR around 100-200 at the coral is the sweet spot
Flow: Moderate to strong. Enough to keep the cap clean and polyps moving, but not a direct blast
Placement: Mid-tank with room to grow. A small frag can easily reach 20-30cm across
Parameters: Standard reef. They're forgiving of minor swings that would stress SPS

The Shedding Cycle (Don't Panic)

This is the biggest source of toadstool panic posts online:

The toadstool retracts its polyps completely
The cap develops a waxy, mucus-like coating
It looks terrible for 3-7 days
The coating peels off
Polyps extend and it looks better than ever

This is completely normal — it's how toadstools clean themselves. Don't move the coral, don't peel the coating, don't assume it's dying. Just wait. If it's been more than two weeks with no polyps and no visible shed cycle, then investigate.

Why Is It Not Opening?

If it's not a shed cycle, check:

Recent move? They sulk for days or weeks after relocation
Flow too strong? Retraction is the response to being battered
Allelopathy? Chemical warfare from nearby corals. Give it space
Water quality? Check ammonia, nitrite, salinity, temperature
Lighting change? They need time to acclimate

The Chemical Warfare Factor

Toadstools produce terpenes that can inhibit nearby coral growth, particularly SPS. In a mixed reef, run activated carbon continuously and do regular water changes.

Getting Started

A toadstool is one of the best centrepiece softies available — affordable, hardy, and grows into an impressive specimen. They ship well and settle quickly.

How big has everyone's toadstool grown? Always interesting to hear about the units that started as tiny frags.