My Pink Hammer (Fimbriaphyllia paraancora) is branching—how does its growth pattern affect placement and pruning?

Branching heads grow outward and upward, often shading lower branches. Give side clearance to prevent self-stinging and to allow flow between heads. For pruning, cut through bare branch skeleton well below soft tissue with bone cutters or a diamond saw. Dip frags in iodine, provide moderate flow to the cut, and avoid sand contact to prevent infection.

How can I maintain the pink coloration without stressing the coral?

Aim for moderate PAR (90–150) with strong blue spectrum (420–470 nm). Keep nutrients present but controlled (nitrate 5–15 ppm, phosphate 0.03–0.08 ppm). Excess white light or ultra-low nutrients can wash out color; excess nutrients may brown it. Stable alkalinity (8–9 dKH) and steady temperature reduce pigment loss during seasonal shifts.

What rare issues can mimic “sulking” and how do I troubleshoot?

Persistent retraction can be triggered by laminar flow burning tissue, vermetid snail mucus nets, or stings from nearby torches. Check for filamentous mucus threads (vermetids) and remove offenders. Redirect flow to be broad and indirect. Inspect at night for long sweepers from neighbors. If tissue recession appears, consider an iodine dip and increase random flow to discourage bacterial growth.

Is it safe to let clownfish host a Pink Hammer?

Light hosting by small clowns may be tolerated, but vigorous rubbing often leads to recession, torn tissue, and brown jelly risk. If hosting begins, reduce flow slightly to minimize flapping, provide an alternative host (optozoanthids, large toadstool), or use a mesh guard temporarily. Monitor for excess mucus, and be ready to separate if polyp extension drops consistently.

Pink Hammer Coral

Hammers

Overview

Pink Hammer Coral displays branching heads with pink hammer-shaped tentacle tips. Fimbriaphyllia paraancora is a large-polyp stony coral with a branching skeleton that prefers moderate lighting and gentle to moderate water flow. It hosts symbiotic algae for photosynthesis but benefits from occasional small meaty feedings, which can support growth and maintain color. Place it where its long sweeper tentacles cannot reach other corals, and avoid direct, strong flow that can damage tissue.

Quick Facts

Care Moderate

Lighting Moderate

Flow Moderate, indirect

Placement Mid–Low

Temperament Semi-aggressive (long sweeper tentacles; 6–8 inches spacing)

Recommended Parameters

Temp 76–80°F

pH 8.1–8.4

Salinity 1.025–1.026

Calcium 400–450 ppm

AlkAlkalinity 8–10 dKH

Magnesium 1250–1350 ppm

Feeding photosynthetic, mysis shrimp, enriched brine shrimp, copepods, rotifers, finely chopped krill and clam, zooplankton, microplankton, coral-specific foods

Care & Placement

Pink Hammer Coral (Fimbriaphyllia paraancora) thrives with stable, moderate conditions and space to expand. Provide 75–150 PAR of light; start low and increase slowly over 2–3 weeks to avoid bleaching. Use moderate, indirect flow that keeps polyps gently swaying without blasting tissue; this helps prevent detritus buildup and tissue recession. Target feed 1–2 times weekly with small meaty foods (mysis, chopped shrimp, reef roids), turning off pumps for 10–15 minutes to improve capture. Keep temperature 75–79°F (24–26°C), salinity 1.025–1.026, pH 8.1–8.4, alkalinity 8.0–9.5 dKH, calcium 400–450 ppm, magnesium 1300–1400 ppm, nitrate 2–15 ppm, and phosphate 0.03–0.08 ppm. Test weekly (alkalinity most often) and avoid rapid swings, which this species dislikes.Place mid to low in the tank with indirect light and flow. Allow 6–8 inches of clearance; sweeper tentacles can sting neighbors. Generally safe with other Fimbriaphyllia types, but mixing morphs can still cause issues—observe and separate if needed. Acclimate by dripping 30–45 minutes, dip for pests, and handle by the base to avoid tearing tissue on the skeleton. Start on the sandbed for a week, then move to the final spot. Common issues: pale tissue (too much light or low nutrients), receding heads (excess flow, low alkalinity, or pests), and brown jelly disease—frag away affected heads and use an iodine dip with improved flow and stability. Avoid persistent hosting by fish that may irritate the polyps.

FAQ

Frequently Asked Questions

About the Pink Hammer Coral

My Pink Hammer (Fimbriaphyllia paraancora) is branching—how does its growth pattern affect placement and pruning?

Branching heads grow outward and upward, often shading lower branches. Give side clearance to prevent self-stinging and to allow flow between heads. For pruning, cut through bare branch skeleton well below soft tissue with bone cutters or a diamond saw. Dip frags in iodine, provide moderate flow to the cut, and avoid sand contact to prevent infection.
How can I maintain the pink coloration without stressing the coral?

Aim for moderate PAR (90–150) with strong blue spectrum (420–470 nm). Keep nutrients present but controlled (nitrate 5–15 ppm, phosphate 0.03–0.08 ppm). Excess white light or ultra-low nutrients can wash out color; excess nutrients may brown it. Stable alkalinity (8–9 dKH) and steady temperature reduce pigment loss during seasonal shifts.
What rare issues can mimic “sulking” and how do I troubleshoot?

Persistent retraction can be triggered by laminar flow burning tissue, vermetid snail mucus nets, or stings from nearby torches. Check for filamentous mucus threads (vermetids) and remove offenders. Redirect flow to be broad and indirect. Inspect at night for long sweepers from neighbors. If tissue recession appears, consider an iodine dip and increase random flow to discourage bacterial growth.
Is it safe to let clownfish host a Pink Hammer?

Light hosting by small clowns may be tolerated, but vigorous rubbing often leads to recession, torn tissue, and brown jelly risk. If hosting begins, reduce flow slightly to minimize flapping, provide an alternative host (optozoanthids, large toadstool), or use a mesh guard temporarily. Monitor for excess mucus, and be ready to separate if polyp extension drops consistently.

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