My Rainbow Indophyllia Coral inflates like a balloon by day and shrinks at night—is that normal, and how do I prevent tears?

Yes, daily inflation/deflation is typical. Tears occur when high flow or sharp sand rubs inflated tissue. Seat it on a smooth, concave tile or fine sand, keep flow gentle and indirect, and avoid handling when puffed. If overinflation lifts the polyp, slightly increase flow or shade to reduce gas build‑up. Small tears heal with stable parameters and target feeding.

How do I keep rainbow colors from fading or shifting to green/brown?

Provide moderate PAR (80–120), heavy blue spectrum for pop, and avoid ultra‑low nutrients—aim NO3 5–15 ppm, PO4 0.03–0.08. Colors wash out under very high light or starve under near‑zero nutrients. Feed small meaty foods weekly to support pigment density. Stable alkalinity 7.5–8.5 and low metals (especially not overdosing iron) help maintain balanced tones.

What’s the best feeding strategy for this coral without causing regurgitation or theft?

Feed at dusk when tentacles extend. Use pea‑sized mysis, chopped clam, or specialized LPS pellets. Pre‑soak pellets to sink, and place a feeding dome or cut bottle over the polyp to stop shrimp from stealing. One targeted meal 1–2× weekly is plenty; larger or frequent meals prompt spit‑ups and stress. Watch for firm, closed mouths post‑feeding.

I’m seeing slow tissue recession at the rim—what’s the likely cause and fix?

Common triggers are abrasive sand, excessive direct flow, or high light after shipping. Move to low‑moderate light, soft indirect flow, and a smooth base. Increase small, frequent feedings for 2–3 weeks. If jelly‑like sloughing appears, do an iodine dip and siphon necrotic tissue. Maintain stable temp, salinity, and trace levels; avoid sudden alkalinity jumps, which burn edges.

Rainbow Indophyllia Coral

Overview

Rainbow Indophyllia Coral shows a large, fleshy single polyp with thick, ridged walls and circular color bands. Indophyllia macassarensis is a large-polyp stony coral; it does well under moderate light and low to moderate, gentle water flow. It relies on symbiotic algae for energy but benefits from occasional small meaty feedings, which can support growth and color stability. Place on a stable sandbed or smooth rock with space around it, as it can sting nearby corals and its tissue is prone to damage from sharp edges.

Quick Facts

Care Moderate

Lighting Low–Moderate

Flow Low–Moderate, indirect

Placement Low

Temperament Semi-aggressive (extends night sweepers; provide 4–6 inches spacing)

Recommended Parameters

Temp 76–80°F

pH 8.1–8.4

Salinity 1.025–1.026

Calcium 400–450 ppm

AlkAlkalinity 8–9.5 dKH

Magnesium 1280–1350 ppm

Feeding photosynthetic, mysis shrimp, enriched brine shrimp, finely chopped marine meat (clam, shrimp), small krill pieces, zooplankton, coral-specific microfoods (e.g., Reef-Roids), sinking LPS pellets

Care & Placement

Rainbow Indophyllia Coral (Indophyllia macassarensis) thrives under stable, slightly nutrient-rich conditions and gentle care. Place it low in the tank, ideally on the sandbed or a smooth, flat rock to protect its fleshy tissue; avoid sharp edges. Provide low to moderate light, around 60–120 PAR, and gentle, indirect flow that keeps light debris off the polyp without deforming it. Feed 1–2 times weekly with small meaty foods (mysis, brine, finely chopped shrimp) or LPS pellets; target feed after lights out when tentacles extend. Maintain temperature 76–79°F, salinity 1.025–1.026 (35 ppt), pH 8.1–8.4, alkalinity 8.0–9.5 dKH, calcium 420–460 ppm, magnesium 1300–1400 ppm, nitrate 5–15 ppm, and phosphate 0.03–0.08 ppm. Test weekly with reliable kits, use a refractometer for salinity, and keep changes gradual; this species resents swings. Give 3–6 inches of space from neighbors; it can extend short stingers at night and may be irritated by aggressive LPS or soft corals. Acclimate with a 30–60 minute drip and light acclimate by shading or reduced photoperiod for a week. Watch for bleaching (too much light), tissue recession (excess flow, low nutrients, or parameter swings), and brown jelly; improve stability and flow, and consider an iodine dip if infection appears. Avoid handling the flesh, limit air exposure, and keep nippy fish (some angels, butterflies) away.

FAQ

Frequently Asked Questions

About the Rainbow Indophyllia Coral

My Rainbow Indophyllia Coral inflates like a balloon by day and shrinks at night—is that normal, and how do I prevent tears?

Yes, daily inflation/deflation is typical. Tears occur when high flow or sharp sand rubs inflated tissue. Seat it on a smooth, concave tile or fine sand, keep flow gentle and indirect, and avoid handling when puffed. If overinflation lifts the polyp, slightly increase flow or shade to reduce gas build‑up. Small tears heal with stable parameters and target feeding.
How do I keep rainbow colors from fading or shifting to green/brown?

Provide moderate PAR (80–120), heavy blue spectrum for pop, and avoid ultra‑low nutrients—aim NO3 5–15 ppm, PO4 0.03–0.08. Colors wash out under very high light or starve under near‑zero nutrients. Feed small meaty foods weekly to support pigment density. Stable alkalinity 7.5–8.5 and low metals (especially not overdosing iron) help maintain balanced tones.
What’s the best feeding strategy for this coral without causing regurgitation or theft?

Feed at dusk when tentacles extend. Use pea‑sized mysis, chopped clam, or specialized LPS pellets. Pre‑soak pellets to sink, and place a feeding dome or cut bottle over the polyp to stop shrimp from stealing. One targeted meal 1–2× weekly is plenty; larger or frequent meals prompt spit‑ups and stress. Watch for firm, closed mouths post‑feeding.
I’m seeing slow tissue recession at the rim—what’s the likely cause and fix?

Common triggers are abrasive sand, excessive direct flow, or high light after shipping. Move to low‑moderate light, soft indirect flow, and a smooth base. Increase small, frequent feedings for 2–3 weeks. If jelly‑like sloughing appears, do an iodine dip and siphon necrotic tissue. Maintain stable temp, salinity, and trace levels; avoid sudden alkalinity jumps, which burn edges.