Why does my Pearl Bubble Coral inflate and deflate unpredictably, and when should I worry?

Physogyra lichtensteini cycles inflation to manage light, flow, and digestion. Brief deflation is normal, but repeated full collapse exposing sharp septa usually signals stress from flow bursts, sudden PAR changes, or alkalinity swings. Soften flow, stabilize dKH, and shade slightly for a week. If tissue retracts from skeleton or mucus turns opaque, siphon gently, perform an iodine dip, and improve aeration to deter bacterial bloom.

A bubble popped—should I patch or glue the tear?

Don’t glue vesicles. Reduce flow so the wound isn’t whipped, maintain steady temperature and dKH, and run fresh carbon. An iodine or broad-spectrum coral dip helps suppress opportunists. Target-feed smaller particles after 48–72 hours to avoid regurgitation. Watch for brown, stringy slime; siphon immediately if seen. Most small tears seal within a week under stable conditions.

What feeding approach improves growth without causing regurgitation or bacterial issues?

Feed at night when feeder tentacles extend; use finely chopped mysis, enriched brine, or small pellets dusted with reef vitamins. Offer small portions that are fully ingested within minutes. Oversized chunks often get expelled and foul tissue. Two to three modest feedings weekly are plenty. If you see repeated spit-ups, reduce particle size, lengthen intervals, and check flow so food isn’t forced against vesicles.

Why is my coral browning under blues, and how can I coax back the pearly sheen?

Browning usually follows elevated nutrients or a rapid light jump. Aim for moderate PAR (about 60–120), with a gentle ramp over 2–3 weeks. Keep nitrate in the mid range and phosphate detectable but low. Improve gas exchange and stabilize pH; wavering pH can mute fluorescence. Periodic, small nocturnal feedings support recovery. Avoid aggressive white channels that can drive photo-oxidative stress.

ORA Splatter Pearl Bubble Coral

Overview

Pearl Bubble Coral has swollen, grape-like vesicles that expand into rounded clusters. Physogyra lichtensteini is a large-polyp stony coral; keep it under low to moderate light and gentle, indirect water flow. It is photosynthetic via symbiotic algae but accepts occasional meaty foods, which can support growth and fuller polyp inflation. Place with space around it, as sweeper tentacles extend at night and can sting nearby corals.

Quick Facts

Care Moderate

Lighting Low–Moderate

Flow Low, indirect

Placement Low–Mid

Temperament Aggressive (6–10 inches spacing)

Recommended Parameters

Temp 76–82°F

pH 8.1–8.4

Salinity 1.025–1.026

Calcium 400–450 ppm

AlkAlkalinity 8–10 dKH

Magnesium 1280–1350 ppm

Feeding photosynthetic, mysis shrimp, enriched brine shrimp, finely chopped krill or shrimp, zooplankton, microplankton, LPS coral foods

Care & Placement

Pearl Bubble Coral (Physogyra lichtensteini) prefers low–moderate light (PAR ~50–120) and gentle, indirect flow that keeps debris from settling without whipping its fleshy vesicles; strong light or direct jets can cause tearing and recession. Place low to mid in the tank, often on the sand bed or a smooth, rounded rock ledge to avoid sharp edges. Leave 6–8 inches from neighbors; at night it extends long sweepers and can sting softer corals and many LPS, so avoid proximity to Euphyllia and aggressive species. Feed 1–2 times weekly with small meaty foods (mysis, chopped krill, enriched brine) or fine coral foods; target feed when tentacles are out after lights dim. Maintain temp 24–26°C (75–79°F), salinity 1.025–1.026, pH 8.1–8.4, alkalinity 8–9.5 dKH, calcium 400–450 ppm, magnesium 1250–1350 ppm, nitrate 2–15 ppm, phosphate 0.02–0.08 ppm. Stability matters—use an auto top-off and test weekly; this species is sensitive to swings, especially in alkalinity and salinity.Acclimate with a slow drip (30–60 minutes) after floating to match temperature; light-acclimate by starting in shade or reducing intensity and increasing over 1–2 weeks. Handle by the skeleton only. Gently baste to remove detritus. Signs of trouble: bleaching (too much light), tissue recession (excess flow, pests, or instability), and brown jelly disease—immediately siphon, perform an iodine or broad-spectrum coral dip, and improve water quality and flow. Avoid rapid parameter changes during water changes, and keep fish or inverts that pick at fleshy corals out of the tank.

FAQ

Frequently Asked Questions

About the ORA Splatter Pearl Bubble Coral

Why does my Pearl Bubble Coral inflate and deflate unpredictably, and when should I worry?

Physogyra lichtensteini cycles inflation to manage light, flow, and digestion. Brief deflation is normal, but repeated full collapse exposing sharp septa usually signals stress from flow bursts, sudden PAR changes, or alkalinity swings. Soften flow, stabilize dKH, and shade slightly for a week. If tissue retracts from skeleton or mucus turns opaque, siphon gently, perform an iodine dip, and improve aeration to deter bacterial bloom.
A bubble popped—should I patch or glue the tear?

Don’t glue vesicles. Reduce flow so the wound isn’t whipped, maintain steady temperature and dKH, and run fresh carbon. An iodine or broad-spectrum coral dip helps suppress opportunists. Target-feed smaller particles after 48–72 hours to avoid regurgitation. Watch for brown, stringy slime; siphon immediately if seen. Most small tears seal within a week under stable conditions.
What feeding approach improves growth without causing regurgitation or bacterial issues?

Feed at night when feeder tentacles extend; use finely chopped mysis, enriched brine, or small pellets dusted with reef vitamins. Offer small portions that are fully ingested within minutes. Oversized chunks often get expelled and foul tissue. Two to three modest feedings weekly are plenty. If you see repeated spit-ups, reduce particle size, lengthen intervals, and check flow so food isn’t forced against vesicles.
Why is my coral browning under blues, and how can I coax back the pearly sheen?

Browning usually follows elevated nutrients or a rapid light jump. Aim for moderate PAR (about 60–120), with a gentle ramp over 2–3 weeks. Keep nitrate in the mid range and phosphate detectable but low. Improve gas exchange and stabilize pH; wavering pH can mute fluorescence. Periodic, small nocturnal feedings support recovery. Avoid aggressive white channels that can drive photo-oxidative stress.