Why does my Banana Boat Torch retract after thriving for months?

Sudden retraction often traces to stability or irritation. Check for alkalinity swings, nutrient starvation (aim NO3 ~5–15 ppm, PO4 ~0.03–0.1), vermetid snails or stinging neighbors, and flow changes causing tissue to rub the skeleton. Shadowing from coral growth can also reduce PAR to inner tissue. Restore stable parameters, improve random flow, remove irritants, and re-angle for even light.

How do I keep the banana-yellow coloration from fading or turning green/brown?

Maintain moderate PAR (150–250) with strong blue/violet (420–470 nm; some 380–420 nm) and avoid overly white spectrums. Keep nutrients non-zero, potassium 380–420 ppm, and iodine ~0.03–0.06 ppm. Excess light can bleach; ultra-low nutrients dull color. Periodic iron/manganese within reef-safe ranges can help fluorescence but avoid heavy dosing. Consistent spectrum and stability are key.

How far do sweepers reach, and can it live near other Euphyllia?

Torch sweepers commonly extend 6–10 inches, often more at night or in laminar flow. Despite family ties, torches can burn hammers/frogspawn and vice versa. Provide a clear buffer, favor random/gyre-like flow to limit straight-line reach, and run carbon if multiple LPS are present. Watch for micro-burns on neighbors and move the torch first—its sting is usually stronger.

How should I respond to early signs of brown jelly on this torch?

Isolate immediately, siphon the slime, and remove necrotic tissue. Do an iodine dip; many hobbyists also use a short ciprofloxacin bath in a separate container. Increase random flow, stabilize alk 8–9 dKH, and keep nutrients modest. Run fresh carbon and consider UV on the system to reduce bacterial load. If recession continues, cut away healthy heads.

Banana Boat Torch Coral

Euphyllia LPS Torch

Overview

Banana Boat Torch Coral features long, swaying tentacles with bright yellow tips. Euphyllia glabrescens is a large-polyp stony coral that prefers moderate light and moderate, indirect flow. It relies on symbiotic algae for photosynthesis but accepts small meaty foods, which can support faster growth and stronger coloration. Place it where the tentacles can move without touching neighbors, as it has long stinging sweeper tentacles.

Quick Facts

Care Moderate

Lighting Moderate–High

Flow Moderate, indirect

Placement Mid–Low

Temperament Aggressive (6–10 inches spacing)

Recommended Parameters

Temp 77–80°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 seafood shrimp or clam, zooplankton, microplankton, coral-specific powdered foods, marine snow

Care & Placement

Banana Boat Torch Coral (Euphyllia glabrescens) thrives with stable, reef-level conditions: temperature 75–79°F (24–26°C), salinity 1.025–1.026, pH 8.0–8.4, alkalinity 8.0–9.5 dKH, calcium 400–450 ppm, magnesium 1300–1400 ppm, nitrate 2–15 ppm, phosphate 0.03–0.1 ppm. Provide moderate light around 80–150 PAR; acclimate to brighter zones over 1–2 weeks using screen or placement in partial shade to avoid bleaching. Aim for moderate, indirect flow that keeps tentacles gently swaying and prevents detritus settling on the flesh; too little flow risks bacterial issues, too much can tear tissue against the skeleton. Feed 1–2 times weekly with small meaty foods (mysis, chopped shrimp) or fine coral foods; target feed lightly to avoid fouling. Place mid to low in the tank on a stable rock ledge; give 6–10 inches of clearance from neighbors. Torch corals can send long stinging sweepers, so avoid close contact with other LPS and soft corals; they generally do best in their own space and should not touch other Euphyllia types. Acclimate with a dip and inspection for pests; mount securely to prevent falls. Watch for tissue recession, retraction, or brown jelly disease—often tied to alkalinity swings, low nutrients, or stagnant flow; respond by stabilizing parameters, increasing gentle flow, siphoning decay, and using an iodine-based dip if needed. Test weekly and dose to maintain stability.

FAQ

Frequently Asked Questions

About the Banana Boat Torch Coral

Why does my Banana Boat Torch retract after thriving for months?

Sudden retraction often traces to stability or irritation. Check for alkalinity swings, nutrient starvation (aim NO3 ~5–15 ppm, PO4 ~0.03–0.1), vermetid snails or stinging neighbors, and flow changes causing tissue to rub the skeleton. Shadowing from coral growth can also reduce PAR to inner tissue. Restore stable parameters, improve random flow, remove irritants, and re-angle for even light.
How do I keep the banana-yellow coloration from fading or turning green/brown?

Maintain moderate PAR (150–250) with strong blue/violet (420–470 nm; some 380–420 nm) and avoid overly white spectrums. Keep nutrients non-zero, potassium 380–420 ppm, and iodine ~0.03–0.06 ppm. Excess light can bleach; ultra-low nutrients dull color. Periodic iron/manganese within reef-safe ranges can help fluorescence but avoid heavy dosing. Consistent spectrum and stability are key.
How far do sweepers reach, and can it live near other Euphyllia?

Torch sweepers commonly extend 6–10 inches, often more at night or in laminar flow. Despite family ties, torches can burn hammers/frogspawn and vice versa. Provide a clear buffer, favor random/gyre-like flow to limit straight-line reach, and run carbon if multiple LPS are present. Watch for micro-burns on neighbors and move the torch first—its sting is usually stronger.
How should I respond to early signs of brown jelly on this torch?

Isolate immediately, siphon the slime, and remove necrotic tissue. Do an iodine dip; many hobbyists also use a short ciprofloxacin bath in a separate container. Increase random flow, stabilize alk 8–9 dKH, and keep nutrients modest. Run fresh carbon and consider UV on the system to reduce bacterial load. If recession continues, cut away healthy heads.