Why does my Hot Ring Blastomussa lose its vivid ring colors over time even with good nutrients?

B. wellsi often comes from deeper, blue-leaning habitats. Excess white intensity or sudden PAR increases can wash pigments. Shift placement to lower light or slightly shaded areas, and run a bluer spectrum (14–20K). Increase intensity gradually over 2–3 weeks. Maintain stable alk (8–9 dKH) and detectable PO4/NO3. Target-feed small meaty foods at night to support pigment recovery.

My colony is inflating but not adding new heads—am I missing something?

Large, puffy heads don’t always indicate rapid skeletal growth. B. wellsi buds from the skeleton’s margins and between septa, which is slow. Ensure gentle, indirect flow so tissue isn’t abraded, keep stable alkalinity and calcium, and feed 1–2x weekly. Avoid frequent moves; consistency drives budding. Watch for baby mouths forming at the base—a better growth cue than inflation.

What causes sudden tissue recession on one or two heads while others look fine?

Local irritation is common: laminar flow blasting a single polyp, vermetid snail webs, sand abrasion from burrowers, or stings from nearby LPS. Check for hidden pests and redirect flow to be diffuse. If recession advances, frag away healthy heads with a clean diamond saw and iodine dip the cut. Tighten salinity stability and avoid big alk corrections during recovery.

Are Blastomussa wellsi aggressive, and what should I keep at a distance?

They have short sweepers and are generally mild, but can be damaged by torches, favias, and certain chalices. Give a few inches of space and avoid direct flow that could carry nematocyst threads onto the tissue. Keep sand-sifters that kick grit (e.g., some wrasses, gobies) from burying the mantle. Avoid clownfish “hosting,” which can cause chronic irritation to fleshy heads.

Hot Ring Blastomussa Coral

Blastomussa

Overview

Hot Ring Blastomussa Coral shows fleshy, round polyps with bright ringed mouths. Blastomussa wellsi is a large-polyp stony coral forming clustered heads; it prefers moderate light and gentle to moderate water flow. It is photosynthetic with symbiotic algae but benefits from occasional small meaty foods, which can support faster growth and stronger color. Place on stable rock or sand with space around it, as feeder tentacles can sting nearby corals.

Quick Facts

Care Moderate

Lighting Low–Moderate

Flow Low–Moderate

Placement Low–Mid

Temperament Peaceful (2–3 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 dKH

Magnesium 1250–1350 ppm

Feeding photosynthetic, mysis shrimp, enriched brine shrimp, finely chopped marine meat, zooplankton, microplankton, Cyclops/Calanus, reef-specific powdered coral foods

Care & Placement

Hot Ring Blastomussa Coral (Blastomussa wellsi) prefers stable, gentle conditions and rewards consistency with full, puffy polyps and rich color. Provide low to moderate light (PAR ~50–100); too much light can cause bleaching and retracted tissue. Use low to moderate, indirect flow—enough to keep detritus from settling in the fleshy heads but never a direct jet, which can lead to recession. Target feed 1–2 times weekly with small meaty foods (mysis, finely chopped shrimp) or fine coral foods; feed after lights out or when feeding tentacles are visible and pause pumps to improve capture.Keep temperature 76–80°F, salinity 1.025–1.026, pH 8.1–8.4, alkalinity 8.0–9.5 dKH, calcium 400–450 ppm, magnesium 1280–1400 ppm, nitrate 2–10 ppm, phosphate 0.03–0.10 ppm. Test weekly and avoid rapid shifts; this species is sensitive to swings, especially in alkalinity and salinity. Place on the sandbed or lower rockwork with gentle light ramps over 1–2 weeks; start shaded and move gradually. Allow 2–3 inches of space; B. wellsi has short sweepers but can sting, and it can be harmed by aggressive neighbors like Euphyllia and Galaxea. Acclimate with a 30–45 minute drip and a brief coral dip to reduce pests. Common issues include bleaching from high light, tissue peel from strong flow or parameter swings, and brown jelly after injury; improve stability, adjust placement, siphon affected tissue, and consider an iodine dip. Handle by the skeleton, not the flesh.

FAQ

Frequently Asked Questions

About the Hot Ring Blastomussa Coral

Why does my Hot Ring Blastomussa lose its vivid ring colors over time even with good nutrients?

B. wellsi often comes from deeper, blue-leaning habitats. Excess white intensity or sudden PAR increases can wash pigments. Shift placement to lower light or slightly shaded areas, and run a bluer spectrum (14–20K). Increase intensity gradually over 2–3 weeks. Maintain stable alk (8–9 dKH) and detectable PO4/NO3. Target-feed small meaty foods at night to support pigment recovery.
My colony is inflating but not adding new heads—am I missing something?

Large, puffy heads don’t always indicate rapid skeletal growth. B. wellsi buds from the skeleton’s margins and between septa, which is slow. Ensure gentle, indirect flow so tissue isn’t abraded, keep stable alkalinity and calcium, and feed 1–2x weekly. Avoid frequent moves; consistency drives budding. Watch for baby mouths forming at the base—a better growth cue than inflation.
What causes sudden tissue recession on one or two heads while others look fine?

Local irritation is common: laminar flow blasting a single polyp, vermetid snail webs, sand abrasion from burrowers, or stings from nearby LPS. Check for hidden pests and redirect flow to be diffuse. If recession advances, frag away healthy heads with a clean diamond saw and iodine dip the cut. Tighten salinity stability and avoid big alk corrections during recovery.
Are Blastomussa wellsi aggressive, and what should I keep at a distance?

They have short sweepers and are generally mild, but can be damaged by torches, favias, and certain chalices. Give a few inches of space and avoid direct flow that could carry nematocyst threads onto the tissue. Keep sand-sifters that kick grit (e.g., some wrasses, gobies) from burying the mantle. Avoid clownfish “hosting,” which can cause chronic irritation to fleshy heads.

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