Why does my Mosh Pit Mushroom Coral inflate into a dome and then shrivel for hours?

Rhodactis use inflation/deflation to regulate light and expel waste. A big “puff” after a photoperiod or feeding is normal. Prolonged shriveling often points to too much light or a sudden flow change. Reduce PAR to 80–150, provide gentle, indirect flow, and avoid large alkalinity swings. If it persists, check for detritus trapped under the foot and gently baste to clear it.

Can the Mosh Pit morph develop “bounce” vesicles, and how do I encourage them?

Some Rhodactis express enlarged vesicles under high blue/UV and richer nutrients. Try a slow ramp to moderate light with strong blue spectrum, maintain nitrate 10–20 ppm and phosphate 0.05–0.15 ppm, and feed small particulate foods weekly. Avoid rapid increases in PAR; stress can cause bleaching or retraction instead of vesicle growth. Not all individuals will form bounce bubbles, even with ideal conditions.

My Mosh Pit is wandering and dropping babies—how do I control spread without harming it?

Rhodactis can pedal-lacerate, leaving tissue that grows into clones. To contain them, isolate on a rubble island and keep surrounding rockwork clean to reduce attachment points. If it detaches, use a specimen cup with rubble and mesh lid to reattach. For removal, gently peel the foot with a credit card edge; place fragments in low-flow cups until anchored.

Are they safe with fish and nearby corals?

Large, sticky Rhodactis can trap tiny fish or sleeping gobies, especially after heavy feeding. Avoid placing them near low-mobility species and do not target feed large meaty chunks. They also deploy mesenterial filaments and can overgrow neighbors; leave 3–5 inches clearance. Use carbon and steady flow to dilute chemical cues during territory skirmishes, and relocate sensitive SPS or fleshy LPS accordingly.

Mosh Pit Mushroom Coral

Mushrooms

Overview

Mosh Pit Mushroom Coral shows a fleshy disc with bumpy lobes and a central mouth. Rhodactis sp. is a corallimorph (soft mushroom-type coral) that prefers low to moderate light and gentle to moderate water flow. It hosts symbiotic algae for photosynthesis but benefits from occasional small meaty feedings, which can improve growth and color. Place on isolated rock with room to expand, as it can overgrow and irritate nearby corals.

Quick Facts

Care Easy

Lighting Low–Moderate

Flow Low–Moderate

Placement Low–Mid

Temperament Semi-aggressive (3–6 inches spacing)

Recommended Parameters

Temp 76–80°F

pH 8.1–8.4

Salinity 1.025–1.026

Calcium 380–430 ppm

AlkAlkalinity 8–10 dKH

Magnesium 1250–1350 ppm

Feeding photosynthetic (primary), mysis shrimp, brine shrimp, finely chopped seafood (shrimp, fish, clam), zooplankton, microplankton, coral-specific powdered foods, marine snow

Care & Placement

Mosh Pit Mushroom Coral (Rhodactis sp.) thrives in stable, nutrient-rich reef systems with moderate stability rather than ultra-low nutrients. Aim for 76–79°F, salinity 1.025–1.026 (35 ppt), pH 8.0–8.4, alkalinity 8–9.5 dKH, calcium 380–450 ppm, magnesium 1250–1350 ppm, nitrate 5–15 ppm, and phosphate 0.03–0.10 ppm. Provide low to moderate light (roughly 50–120 PAR) and indirect, gentle to moderate flow; too much light bleaches, too much flow causes detachment, while a soft, random current helps keep detritus off the cap. Place low to mid in the tank on rock rubble so it can grip and spread; avoid sand collecting on the oral disc. Leave 3–4 in (7–10 cm) from neighbors—Rhodactis can overgrow or sting nearby corals. Compatible with most peaceful fish and inverts; guard powerheads to prevent drifting polyps from getting pulled in.Acclimate slowly: match temperature, drip acclimate 30–45 minutes, then light-acclimate over 2–3 weeks (use screen or reduce intensity). Use a mild iodine dip if needed; mushrooms can be sensitive to strong dips and glue—seat on rubble in a cup or basket until attached. Feed 1–2x weekly with small portions of mysis, chopped shrimp, or fine coral foods; avoid overfeeding. Signs of stress include gaping mouth, prolonged shrinkage, or bleaching—check salinity and alkalinity stability first, then lower light and improve gentle flow. If detaching, reduce flow, place in a low-flow container with rubble, and allow it to reattach.

FAQ

Frequently Asked Questions

About the Mosh Pit Mushroom Coral

Why does my Mosh Pit Mushroom Coral inflate into a dome and then shrivel for hours?

Rhodactis use inflation/deflation to regulate light and expel waste. A big “puff” after a photoperiod or feeding is normal. Prolonged shriveling often points to too much light or a sudden flow change. Reduce PAR to 80–150, provide gentle, indirect flow, and avoid large alkalinity swings. If it persists, check for detritus trapped under the foot and gently baste to clear it.
Can the Mosh Pit morph develop “bounce” vesicles, and how do I encourage them?

Some Rhodactis express enlarged vesicles under high blue/UV and richer nutrients. Try a slow ramp to moderate light with strong blue spectrum, maintain nitrate 10–20 ppm and phosphate 0.05–0.15 ppm, and feed small particulate foods weekly. Avoid rapid increases in PAR; stress can cause bleaching or retraction instead of vesicle growth. Not all individuals will form bounce bubbles, even with ideal conditions.
My Mosh Pit is wandering and dropping babies—how do I control spread without harming it?

Rhodactis can pedal-lacerate, leaving tissue that grows into clones. To contain them, isolate on a rubble island and keep surrounding rockwork clean to reduce attachment points. If it detaches, use a specimen cup with rubble and mesh lid to reattach. For removal, gently peel the foot with a credit card edge; place fragments in low-flow cups until anchored.
Are they safe with fish and nearby corals?

Large, sticky Rhodactis can trap tiny fish or sleeping gobies, especially after heavy feeding. Avoid placing them near low-mobility species and do not target feed large meaty chunks. They also deploy mesenterial filaments and can overgrow neighbors; leave 3–5 inches clearance. Use carbon and steady flow to dilute chemical cues during territory skirmishes, and relocate sensitive SPS or fleshy LPS accordingly.