Mushroom Coral Care Guide: Lighting, Flow, Placement & Propagation

Mushroom Coral Lighting Requirements

Most Mushroom Corals in our systems do well under relatively low light. 30–100 PAR is a good general range, especially for Discosoma and Ricordea yuma. Rhodactis often tolerate approximately 100–150 PAR.

In our experience, lighting above approximately 150 PAR often stresses Mushroom Corals. Rather than trying to maximize their lighting, select a lower-light placement and watch how the specimen expands and colors up.

Does every mushroom prefer the same PAR?

No. Discosoma and Ricordea yuma are generally happier at 30–100 PAR, while Rhodactis more commonly tolerate 100–150 PAR. Ricordea florida are generally hardy, but we have not identified a separate preferred PAR range for them in our systems.

Excessive illumination can contribute to shrinking or bleaching. If a mushroom remains contracted or becomes pale, evaluate whether excessive lighting could be the cause.

Low Flow Is Best for Most Mushroom Corals

Low water flow is our general recommendation. Mushrooms may tolerate moderate flow but often will not expand fully in it.

Collector Bounce Mushrooms deserve particular protection. In our experience, their enlarged, delicate vesicles can be damaged by even moderate water movement.

Placement, Attachment & Mushroom Gardens

We generally recommend placing Mushroom Corals low on the rockwork, where both lighting and flow are usually gentler. In a lower-light reef aquarium, they may also do well higher in the aquascape.

Keep fast-growing mushrooms on separate rock islands

Some mushrooms multiply quickly and spread throughout connected rockwork. Hairy Mushrooms are a good example. We recommend isolating fast-growing varieties on their own rock island instead of placing them on the main aquascape, where their spread can become difficult to manage.

Attachment matters

Unlike hard corals attached to rigid skeletons, mushrooms can detach from their substrate when stressed. Discosoma are especially prone to this after shipping or significant aquarium fluctuations. We address how to protect newly introduced specimens in the acclimation section below.

Water Chemistry: Consistency First

At Lucky Corals, we keep our mushroom systems at approximately 76–78°F with alkalinity around 8.0 dKH. Salinity, calcium, and magnesium are maintained near natural seawater levels.

Mushroom Corals are hardy in general and can tolerate a range of stable temperatures commonly used in reef aquariums. However, tolerance varies from one group or strain to another.

Choose reasonable water parameters and maintain them consistently rather than repeatedly changing conditions to reach a single idealized number.

Do Mushroom Corals Need Direct Feeding?

Rhodactis typically show a strong feeding response in our systems. You can attempt to spot-feed other mushrooms, but only continue if the specimen clearly consumes the food.

Food left uneaten can deteriorate water quality.  Only feed mushrooms that reliably swallow the food you offer.

Differences Between Mushroom Coral Groups

Not all Mushroom Corals have the same degree of hardiness. These differences can matter more than whether a specimen is simply labeled a “mushroom coral.”

Rhodactis: generally the easiest

In our experience, Rhodactis are the easiest group. They usually tolerate a wider range of lighting, frequently show a strong feeding response, and include some rapidly spreading hairy varieties. The enlarged vesicles on certain collector Bounce strains, however, require special protection.

Discosoma: Hardy, but Susceptible to Detachment

Discosoma are generally hardy, but they're much more likely than other Mushroom Corals to detach from their substrate when stressed by shipping or changing aquarium conditions. Even an otherwise healthy Discosoma can become lost in the rockwork after detaching.

At Lucky Corals, we ship certain collector Discosoma in mushroom cages to help prevent detachment and reduce the risk of the coral becoming lost after arrival.

Ricordea yuma: highly variable hardiness

Yumas vary dramatically. Some strains are very hardy, while others are extremely difficult to maintain. We carefully source Yumas based on hardiness as well as color. A beautiful specimen isn't a good purchase if its strain has a poor record of surviving in aquariums.

Ricordea florida: generally hardy

Ricordea florida are generally hardy and make excellent additions to appropriately lit, low-flow aquariums. They commonly reproduce in aquariums by longitudinal fission.

Bounce & Jawbreaker Mushroom Care

Keep large-vesicle Bounce Mushrooms submerged

We recommend avoiding air exposure for Bounce Mushrooms with enlarged vesicles. When lifted from the water, the weight of the bubbles can cause them to rupture. Handle these specimens gently and keep them underwater during transfers whenever practical.

Why do some Mushroom Corals develop bubbles?

Bubble development remains something of a mystery. Genetics plays a major role. Strong blue lighting is sometimes cited as contributing to vesicle development, but Mushroom Corals displayed Bounce characteristics before blue LED lighting became common in reef aquariums. Blue LED lighting is therefore not required for Bounce vesicle development.

Jawbreaker Mushrooms

Jawbreaker Mushrooms are prized for their vibrant colors and incredible fluorescence under blue LED lighting. As Discosoma, they are susceptible to detaching from their substrate during shipping and acclimation.

At Lucky Corals, we ship every Jawbreaker Mushroom in a protective mushroom cage, which customers can continue using during acclimation. We recommend keeping the mushroom in its cage for several weeks, or until it appears relaxed and securely attached, before placing it in a suitable low-flow area of the aquarium.

Acclimating Newly Shipped Mushroom Corals

Our standard temperature-acclimation practice is to float the sealed shipping container in the aquarium or sump for 15–30 minutes. Once the temperature has equalized, handle the specimen gently during dipping and inspection.

Place the mushroom in a low-light, low-flow area, preferably near the bottom of the aquarium. We recommend starting most varieties at approximately 30–100 PAR, avoiding stronger lighting while the coral adjusts to its new environment. Once acclimated, the mushroom can be moved to a permanent location with lighting appropriate for its variety.

Why we use cages for newly introduced Discosoma

Discosoma are dramatically more likely to detach following shipping than the other mushroom groups we commonly maintain. We consider a cage a wise precaution for all newly introduced Discosoma.

A cage prevents a detached mushroom from being lost in the aquarium and, in our experience, also discourages detachment while the specimen adjusts.

When to remove the cage

After several weeks to approximately one month, a mushroom that appears relaxed, healthy, and securely attached can be removed from its cage and placed in a low-flow area with appropriate lighting. Base the decision on its condition, not just the number of days that have passed.

Common Mushroom Coral Problems

Shrinking and poor expansion

Mushrooms that remain contracted can be experiencing stress. Excessive lighting or flow is worth checking, particularly if the specimen previously expanded well.

Bleaching

Loss of color may signal environmental stress. For mushrooms kept in higher light, consider whether the PAR is excessive for that variety.

Coral warfare

Nearby aggressive corals can injure Mushroom Corals. Leave enough space for neighboring colonies to expand, and avoid placing mushrooms where other corals can sting them.

Ricordea yuma can be particularly aggressive, including toward other varieties of Mushroom Corals, and should be given adequate separation.

Discosoma and Rhodactis can often touch without harming each other, but we generally recommend keeping them separated to reduce the risk of aggression as the colonies grow.

Detachment

Discosoma may release from their substrate during shipping stress or changing tank conditions. Containment helps prevent loss while the coral settles and reattaches.

Mushroom Coral Reproduction & Propagation

Mushroom Corals can reproduce sexually and asexually. In established reef aquariums, reefkeepers generally observe asexual reproduction much more often. The methods we most commonly associate with each group are:

OG Bounce varieties can be an exception

Some OG Bounce Mushroom varieties seldom reproduce naturally in aquariums and are typically multiplied by fragging. Do not assume that every Rhodactis will spread quickly just because ordinary hairy mushrooms can.

Building a long-term mushroom garden

Consider both the current appearance and the future growth rate of each mushroom. Put aggressive spreaders on separate rock islands and reserve appropriate lower-light, low-flow spaces for slow-growing collector varieties.