Why does my Hulk Leptoseris fade or bleach under lighting that suits my other SPS?

Leptoseris sp. are adapted to deeper, dimmer zones. Hulk typically prefers 50–120 PAR with a blue-heavy spectrum. High PAR or rapid acclimation can bleach or flatten fluorescence. Start in shaded lower rockwork, ramp intensity over weeks, and avoid strong white channels. Stable nutrients (NO3 5–15 ppm, PO4 0.03–0.1 ppm) help maintain the neon green rather than washing out or browning.

The colony is cupping upward and self-shading—normal or a sign of trouble?

Normal. Leptoseris plates adapt to light direction and flow, often cupping to capture oblique light and shade their own tissue. Mount at an angle with crossflow so the underside gets gentle movement. Periodically baste the underside to prevent detritus buildup that can cause central recession. If you need flatter growth, rotate the frag to change light incidence.

I’m seeing tissue loss from the center outward despite stable parameters—what should I check?

Look for detritus trapped under the plate, low underside flow, and pests. Leptoseris-eating nudibranchs leave scalloped bite marks and come out at night; inspect with a red light and dip if found. Increase underside flow, turkey-baste weekly, and consider an iodine or broad-spectrum coral dip. If bacterial, a short, gentle Lugol’s dip plus improved cleanliness usually halts recession.

Target feeding seems ineffective—how should I feed this coral for color and growth?

Its mouths are tiny and open mostly at night. Broadcast very fine foods (e.g., rotifers, reef powders, live phyto) after lights out with flow briefly reduced, then restored to disperse particulates. Aim for consistent, small feedings 1–2 times weekly. Overfeeding larger particles just fouls the plate; focus on waterborne microfoods and stable nutrients to support fluorescence and steady plating growth.

TSA Hulk Leptoseris Coral

Encrusters SPS Leptoseris

Overview

Hulk Leptoseris Coral shows bright green plating ridges forming thin, overlapping discs. Leptoseris sp. is a small-polyp stony, plating coral that prefers low to moderate light and gentle to moderate, indirect flow. It relies on symbiotic algae for most nutrition, but occasional fine particulate foods at night can support growth and maintain color. Place on stable rock with space around the edges, and keep distance from corals with long stinging sweepers.

Quick Facts

Care Moderate

Lighting Low-moderate

Flow Low-moderate

Placement Low

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 7.5–8.5 dKH

Magnesium 1250–1350 ppm

Feeding photosynthetic (primary), phytoplankton, microplankton, rotifers, copepod nauplii, powdered coral foods (reef roids), marine snow

Care & Placement

Hulk Leptoseris Coral (Leptoseris sp.) prefers low to moderate light and gentle, indirect flow. Aim for 50–120 PAR; start low and increase slowly to avoid bleaching. Provide random, low–moderate flow to keep fine debris off the surface without lifting tissue. It is photosynthetic but benefits from occasional small-particle feedings (reef roids, rotifers, enriched brine/mysis slurry) 1–2 times weekly, ideally after lights out when polyps extend. Keep water stable: temperature 75–78°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 1280–1380 ppm, nitrate 5–15 ppm, phosphate 0.03–0.08 ppm. Test weekly (more often after changes), use an ATO for salinity stability, and run fresh carbon if mixing many corals.Place on lower rockwork or shaded ledges where light is gentle; avoid sand that can collect on the tissue. Give 2–3 inches of space. It is generally peaceful with short tentacles but grows as a fast encruster and can overtake neighbors by shading. Acclimate by temperature matching, dipping, drip acclimating, and using light acclimation (screens or starting on the bottom). Common issues: rapid light increase causes paling; fix by reducing PAR and extending photoperiod gradually. Recession often stems from instability, detritus buildup, or pests (vermetid snails, nudibranchs); increase gentle flow, stabilize parameters, and remove irritants. Monitor PAR if possible, keep nutrients non-zero for color, and avoid large, frequent parameter swings.

FAQ

Frequently Asked Questions

About the TSA Hulk Leptoseris Coral

Why does my Hulk Leptoseris fade or bleach under lighting that suits my other SPS?

Leptoseris sp. are adapted to deeper, dimmer zones. Hulk typically prefers 50–120 PAR with a blue-heavy spectrum. High PAR or rapid acclimation can bleach or flatten fluorescence. Start in shaded lower rockwork, ramp intensity over weeks, and avoid strong white channels. Stable nutrients (NO3 5–15 ppm, PO4 0.03–0.1 ppm) help maintain the neon green rather than washing out or browning.
The colony is cupping upward and self-shading—normal or a sign of trouble?

Normal. Leptoseris plates adapt to light direction and flow, often cupping to capture oblique light and shade their own tissue. Mount at an angle with crossflow so the underside gets gentle movement. Periodically baste the underside to prevent detritus buildup that can cause central recession. If you need flatter growth, rotate the frag to change light incidence.
I’m seeing tissue loss from the center outward despite stable parameters—what should I check?

Look for detritus trapped under the plate, low underside flow, and pests. Leptoseris-eating nudibranchs leave scalloped bite marks and come out at night; inspect with a red light and dip if found. Increase underside flow, turkey-baste weekly, and consider an iodine or broad-spectrum coral dip. If bacterial, a short, gentle Lugol’s dip plus improved cleanliness usually halts recession.
Target feeding seems ineffective—how should I feed this coral for color and growth?

Its mouths are tiny and open mostly at night. Broadcast very fine foods (e.g., rotifers, reef powders, live phyto) after lights out with flow briefly reduced, then restored to disperse particulates. Aim for consistent, small feedings 1–2 times weekly. Overfeeding larger particles just fouls the plate; focus on waterborne microfoods and stable nutrients to support fluorescence and steady plating growth.

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TSA Hulk Leptoseris Coral

Overview

Quick Facts

Recommended Parameters

Care & Placement

Leptoseris