Why does Frankie's Holy Grail Pectinia extend long sweepers at night, and how far should I space it?

Pectinia pentagonus is highly aggressive after lights out, sending 6–10 inch (15–25 cm) sweepers and mesenterial filaments. Place it low with at least 10–12 inches of clear space downcurrent from fleshy LPS and acros with delicate tips. Avoid laminar flow that blows sweepers into neighbors. Run fresh carbon and keep organics moderate to reduce chemical skirmishes.

My “Holy Grail” colors dulled to olive—what settings help restore gold and neon highlights?

This coral shows best under strong blue spectrum (peak 420–470 nm) with modest white. Keep PAR around 120–180, phosphate 0.03–0.08 ppm, nitrate 5–15 ppm, and stable alkalinity 8–9 dKH. Sudden nutrient starvation washes colors; swinging alk burns ridges. Brief acclimation to higher blues over 2–3 weeks often brings back metallic tones.

Tissue is receding from the valleys while ridges look fine—what’s causing this pattern?

Detritus tends to collect in Pectinia’s troughs, fueling bacterial hotspots and brown jelly. Increase cross-flow (not direct blasts) to keep valleys clean, and gently turkey-baste the skeleton every few days. Check for vermetid snails on ridge crests—snail mucus nets irritate tissue. If infection starts, frag past the necrotic boundary and use an iodine dip; stabilize parameters afterward.

What feeding strategy actually benefits this coral without causing bacterial film?

Target feed small particulate foods (0.5–2 mm) or enriched zooplankton after lights dim, when feeders are out. Limit to 1–2 times weekly; overfeeding pools in valleys and triggers slime. Pair with steady nutrients rather than heavy spot-feeding. If mucus builds, reduce portions, increase flow across troughs, and space feedings 3–4 days apart.

TSA Franks Holy Grail Pectinia Coral

Chalice Pectinia LPS

Overview

Frankie's Holy Grail Pectinia Coral shows deeply scalloped, leaf-like ridges with pronounced valleys. Pectinia pentagonus is a large-polyp stony coral forming ruffled plates; keep under moderate lighting and moderate, indirect water flow. It relies on symbiotic algae for most nutrition but accepts small meaty foods, which can support faster growth and stronger color. Give it ample space and place on a stable rock ledge, as long sweeper tentacles can sting nearby corals.

Quick Facts

Care Moderate

Lighting Low–Moderate

Flow Moderate, indirect

Placement Low–Mid

Temperament Aggressive (8–10 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, finely chopped seafood, zooplankton/microplankton, rotifers, marine snow, coral micro foods (e.g., Reef Roids)

Care & Placement

Frankie’s Holy Grail Pectinia Coral (Pectinia pentagonus) thrives under stable, low-to-moderate light (PAR 80–150) and moderate, indirect flow that keeps its valleys free of detritus without blasting tissue. Place low to mid in the tank, on an isolated rock or sandbed, with 6–10 inches of space from neighbors; long nighttime sweeper tentacles can sting and outcompete nearby corals. Target-feed 2–3 times weekly after lights down with small meaty foods (mysis, finely chopped seafood) or LPS pellets; occasional fine particulate foods can support growth and coloration. Maintain temp 75–78°F (24–26°C), salinity 1.025–1.026, pH 8.1–8.4, alkalinity 8.0–9.5 dKH, calcium 420–460 ppm, magnesium 1300–1400 ppm, nitrate 2–10 ppm, and phosphate 0.02–0.08 ppm. Use reliable test kits or a controller, and prioritize stability over chasing exact numbers.Acclimate with a drip method and light acclimation (start shaded or use screen, then increase exposure over 1–2 weeks). Dip prior to introduction and inspect for pests. Handle by the base; the skeleton is thin and can cut tissue. Signs of excess light include pale or receding edges; reduce intensity or extend photoperiod gradually. Tissue recession can stem from stagnant areas, sudden alkalinity swings, or bacterial issues; improve flow, stabilize parameters, and consider an iodine-based dip if infection is suspected. Avoid placement near other aggressive LPS and keep fish or inverts that pick at fleshy corals out of the system. Regularly turkey-baste debris from the coral and surrounding rock to prevent buildup.

FAQ

Frequently Asked Questions

About the TSA Franks Holy Grail Pectinia Coral

Why does Frankie's Holy Grail Pectinia extend long sweepers at night, and how far should I space it?

Pectinia pentagonus is highly aggressive after lights out, sending 6–10 inch (15–25 cm) sweepers and mesenterial filaments. Place it low with at least 10–12 inches of clear space downcurrent from fleshy LPS and acros with delicate tips. Avoid laminar flow that blows sweepers into neighbors. Run fresh carbon and keep organics moderate to reduce chemical skirmishes.
My “Holy Grail” colors dulled to olive—what settings help restore gold and neon highlights?

This coral shows best under strong blue spectrum (peak 420–470 nm) with modest white. Keep PAR around 120–180, phosphate 0.03–0.08 ppm, nitrate 5–15 ppm, and stable alkalinity 8–9 dKH. Sudden nutrient starvation washes colors; swinging alk burns ridges. Brief acclimation to higher blues over 2–3 weeks often brings back metallic tones.
Tissue is receding from the valleys while ridges look fine—what’s causing this pattern?

Detritus tends to collect in Pectinia’s troughs, fueling bacterial hotspots and brown jelly. Increase cross-flow (not direct blasts) to keep valleys clean, and gently turkey-baste the skeleton every few days. Check for vermetid snails on ridge crests—snail mucus nets irritate tissue. If infection starts, frag past the necrotic boundary and use an iodine dip; stabilize parameters afterward.
What feeding strategy actually benefits this coral without causing bacterial film?

Target feed small particulate foods (0.5–2 mm) or enriched zooplankton after lights dim, when feeders are out. Limit to 1–2 times weekly; overfeeding pools in valleys and triggers slime. Pair with steady nutrients rather than heavy spot-feeding. If mucus builds, reduce portions, increase flow across troughs, and space feedings 3–4 days apart.