How do I keep the JF Purple People Eater Favia’s deep purple and neon mouths from washing out over time?

Aim for moderate PAR (120–180) with strong blue/violet spectrum (420–470 nm). Keep nutrients non-zero: nitrate 5–15 ppm, phosphate 0.03–0.08 ppm. Too “ultra-clean” systems pale it. Feed small meaty foods or amino blends 2–3x weekly after lights out. Maintain stable alkalinity (8–9 dKH) and consider low-dose iron/manganese if running heavy export; stop if algae increases.

Why are its sweeper tentacles unpredictably long at night, and how can I limit stinging neighbors?

Favia favus can throw 2–4 inch sweepers, longer in turbulent flow or after heavy feeding. Give 3–4 inches of space and place on its own rock island. A slightly steadier, indirect flow shortens sweepers. Target feed lightly to reduce competitive aggression. Use small rubble “fences” as physical buffers. Avoid placing thin-tissued chalices or acans within range.

My colony is receding from the base while tops look fine—what’s the likely cause?

Base recession often follows detritus buildup, sand abrasion, vermetid irritation, or low pH/alk swings at night. Improve low-level flow around the base, lift the colony slightly, and remove vermetids. Check alk stability (daily swing <0.4 dKH) and maintain pH 8.1–8.3. Seal exposed skeleton with a thin ring of epoxy to deter borers. Spot feed polyps during recovery to rebuild tissue.

Can I grow it next to other Favia/Favites or will they fuse?

Fusion is uncommon; most strains remain alloreactive and will wage slow tissue wars along contact lines. Even same-species but different lineage can fight. Keep distinct favids on separate rocks with small gaps to prevent creeping contact. If co-scaping is required, place slower growers upcurrent so mucous and sweepers don’t constantly contact the JF PPE Favia’s perimeter.

JF Purple People Eater Favia Colony Coral

JF Purple People Eater Favia Coral

Q: Can I grow it next to other Favia/Favites or will they fuse?

Fusion is uncommon; most strains remain alloreactive and will wage slow tissue wars along contact lines. Even same-species but different lineage can fight. Keep distinct favids on separate rocks with small gaps to prevent creeping contact. If co-scaping is required, place slower growers upcurrent so mucous and sweepers don’t constantly contact the JF PPE Favia’s perimeter.

Overview

JF Purple People Eater Favia Coral shows purple corallites with contrasting green mouths and a bumpy, encrusting colony form. Scientifically Favia favus, this is a stony brain coral forming encrusting to domed heads; it does best under moderate lighting and low to moderate water flow. It is photosynthetic through symbiotic algae but benefits from small meaty foods at night, which can support faster growth and maintain color. Place it on stable rock or sand with several inches of space, as its sweeper tentacles can sting nearby corals.

Quick Facts

Care Easy

Lighting Low–Moderate

Flow Low to Moderate

Placement Low–Mid

Temperament Semi-aggressive (3–6 inches spacing)

Recommended Parameters

Temp 76–80°F

pH 8.1–8.4

Salinity 1.025–1.026

Calcium 420–450 ppm

AlkAlkalinity 8–10 dKH

Magnesium 1250–1350 ppm

Feeding photosynthetic, mysis shrimp, enriched brine shrimp, chopped krill, finely minced seafood, zooplankton, microplankton, coral-specific powdered foods, small sinking pellets

Care & Placement

JF Purple People Eater Favia Coral (Favia favus) thrives with stable, moderate conditions and careful placement. Provide low to moderate light (PAR ~80–150); too much light can wash out color or cause bleaching, so start shaded and increase slowly over 1–2 weeks. Aim for moderate, indirect flow to keep detritus off the valleys without lifting tissue; avoid direct jets. Feed 2–3 times weekly after lights out with small meaty foods (mysis, reef roids, finely chopped seafood) when feeder tentacles extend; this supports growth and color. Target parameters: temp 75–79°F (24–26°C), salinity 1.025–1.026, pH 8.0–8.4, alkalinity 8.0–9.5 dKH, calcium 420–460 ppm, magnesium 1280–1400 ppm, nitrate 2–10 ppm, phosphate 0.03–0.08 ppm. Test weekly, watch alkalinity stability, and calibrate refractometers regularly.Place mid to low in the tank on stable rock with good ventilation around the coral. This species is semi‑aggressive; night sweepers can reach 2–4 inches, so leave 4–6 inches from neighbors, especially fleshy LPS and delicate SPS. Acclimate with a 30–45 minute drip and a coral dip to reduce pests. Signs of stress include receding tissue, exposed skeleton, or gaping mouths; check for alk swings, salinity drift, pest nips, or excessive light/flow. If recession starts, lower light, improve flow, and increase gentle feedings. Prioritize consistency over rapid adjustments, and avoid large parameter changes during water changes.

FAQ

Frequently Asked Questions

About the JF Purple People Eater Favia Coral

How do I keep the JF Purple People Eater Favia’s deep purple and neon mouths from washing out over time?

Aim for moderate PAR (120–180) with strong blue/violet spectrum (420–470 nm). Keep nutrients non-zero: nitrate 5–15 ppm, phosphate 0.03–0.08 ppm. Too “ultra-clean” systems pale it. Feed small meaty foods or amino blends 2–3x weekly after lights out. Maintain stable alkalinity (8–9 dKH) and consider low-dose iron/manganese if running heavy export; stop if algae increases.
Why are its sweeper tentacles unpredictably long at night, and how can I limit stinging neighbors?

Favia favus can throw 2–4 inch sweepers, longer in turbulent flow or after heavy feeding. Give 3–4 inches of space and place on its own rock island. A slightly steadier, indirect flow shortens sweepers. Target feed lightly to reduce competitive aggression. Use small rubble “fences” as physical buffers. Avoid placing thin-tissued chalices or acans within range.
My colony is receding from the base while tops look fine—what’s the likely cause?

Base recession often follows detritus buildup, sand abrasion, vermetid irritation, or low pH/alk swings at night. Improve low-level flow around the base, lift the colony slightly, and remove vermetids. Check alk stability (daily swing <0.4 dKH) and maintain pH 8.1–8.3. Seal exposed skeleton with a thin ring of epoxy to deter borers. Spot feed polyps during recovery to rebuild tissue.
Can I grow it next to other Favia/Favites or will they fuse?

Fusion is uncommon; most strains remain alloreactive and will wage slow tissue wars along contact lines. Even same-species but different lineage can fight. Keep distinct favids on separate rocks with small gaps to prevent creeping contact. If co-scaping is required, place slower growers upcurrent so mucous and sweepers don’t constantly contact the JF PPE Favia’s perimeter.