Why does my OG Red Dragon shift from deep red to pink or brown even though parameters look fine?

This coral prefers moderate PAR (200–300) with heavy blue spectrum. Excess white light or PAR >350 can wash it to pink/pale; elevated nutrients push it toward brown. Aim for NO3 ~2–10 ppm, PO4 ~0.02–0.07 ppm, stable alkalinity 7.5–8.5 dKH, and cool, steady temps (24–25.5°C). Color usually rebounds after gradual light adjustment and a few weeks of stability.

What placement and flow bring out its best growth form without shadowing?

It encrusts first, then throws thin, upright branches that easily self-shade. Start low and acclimate upward; give open space all around. Provide strong, random flow from multiple sources—avoid a single blasting jet that can strip tissue on the leeward side. Rotating or alternating pumps help keep detritus off the base and maintain coloration along inner branches.

How can I judge health when the polyps are tiny and barely extend?

Red Dragon shows minimal daytime extension even when thriving. Look for pearly white axial tips, steady encrustment at the base, intact smooth tissue between corallites, and stable color. At night, you may see subtle feeding response to fine particulate foods or aminos. Dull tips, receding base, or matte tissue often indicate instability, excess light, or pests rather than “poor polyp extension.”

What’s the most common hidden cause of slow base recession in Red Dragon?

Subtle alkalinity drift combined with chemical warfare and detritus at the base. Check for day–night alk swing, run fresh carbon near softies/LPS, increase chaotic flow under the colony, and inspect for AEFW or red bugs. If recession continues, perform an iodine/broad-spectrum coral dip, trim into healthy tissue, and remount away from aggressive neighbors. Stable parameters typically halt the spread.

OG Red Dragon Acropora Coral

Acropora SPS

Overview

OG Red Dragon Acropora Coral shows thin, smooth branches with vivid red-pink tissue and pale growth tips. Acropora carduus is a small-polyp stony branching coral that prefers strong lighting and high, turbulent water flow. It is primarily photosynthetic through symbiotic algae, but small, frequent feedings of fine plankton can support faster growth and maintain color. Place high on stable rockwork with ample space from other corals, and maintain very stable water parameters.

Quick Facts

Care Difficult

Lighting Moderate–High

Flow Moderate–High

Placement High

Temperament Peaceful (2–3 inches spacing)

Recommended Parameters

Temp 76–80°F

pH 8.1–8.4

Salinity 1.025–1.026

Calcium 420–450 ppm

AlkAlkalinity 7.5–9 dKH

Magnesium 1280–1350 ppm

Feeding photosynthetic (primary), microplankton, rotifers, copepod nauplii, oyster eggs, coral-specific microfoods (e.g., Reef Roids), amino acid supplements, dissolved organics

Care & Placement

OG Red Dragon Acropora Coral (Acropora carduus) thrives with stable, clean water and steady parameters. Aim for 200–300 PAR under balanced spectrum LEDs or T5/LED hybrids; acclimate slowly to light with shorter photoperiods or screen to avoid bleaching and color loss. Provide strong, random flow to keep polyps clean and prevent detritus settling between branches; alternating pumps or gyres work well. Target fine particulate foods 1–2 times weekly (rotifers, reef roids, amino acids) after lights dim, but keep nutrients modest: nitrate 2–10 ppm, phosphate 0.02–0.08 ppm. Maintain temperature 75–79°F (24–26°C), salinity 1.025–1.026, pH 8.1–8.4, alkalinity 8–9 dKH, calcium 420–460 ppm, magnesium 1300–1400 ppm. Use reliable test kits, monitor alkalinity frequently, and consider periodic ICP tests.Place frags mid to upper rockwork with room for vertical branching and good crossflow; avoid shaded spots and leave 3–4 inches from other corals. It is not aggressive but is sensitive to stings from LPS sweepers and allelopathy; run fresh carbon and perform regular water changes. Acclimate with a slow drip and dip new pieces to exclude pests (AEFW, red bugs); inspect at night for bite marks. Common issues include bleaching from sudden light changes and tissue recession from alkalinity swings. If recession starts, stabilize parameters, increase flow around the base, and frag healthy tips if needed. Secure frags with epoxy and superglue for stability. Consistency is key.

FAQ

Frequently Asked Questions

About the OG Red Dragon Acropora Coral

Why does my OG Red Dragon shift from deep red to pink or brown even though parameters look fine?

This coral prefers moderate PAR (200–300) with heavy blue spectrum. Excess white light or PAR >350 can wash it to pink/pale; elevated nutrients push it toward brown. Aim for NO3 ~2–10 ppm, PO4 ~0.02–0.07 ppm, stable alkalinity 7.5–8.5 dKH, and cool, steady temps (24–25.5°C). Color usually rebounds after gradual light adjustment and a few weeks of stability.
What placement and flow bring out its best growth form without shadowing?

It encrusts first, then throws thin, upright branches that easily self-shade. Start low and acclimate upward; give open space all around. Provide strong, random flow from multiple sources—avoid a single blasting jet that can strip tissue on the leeward side. Rotating or alternating pumps help keep detritus off the base and maintain coloration along inner branches.
How can I judge health when the polyps are tiny and barely extend?

Red Dragon shows minimal daytime extension even when thriving. Look for pearly white axial tips, steady encrustment at the base, intact smooth tissue between corallites, and stable color. At night, you may see subtle feeding response to fine particulate foods or aminos. Dull tips, receding base, or matte tissue often indicate instability, excess light, or pests rather than “poor polyp extension.”
What’s the most common hidden cause of slow base recession in Red Dragon?

Subtle alkalinity drift combined with chemical warfare and detritus at the base. Check for day–night alk swing, run fresh carbon near softies/LPS, increase chaotic flow under the colony, and inspect for AEFW or red bugs. If recession continues, perform an iodine/broad-spectrum coral dip, trim into healthy tissue, and remount away from aggressive neighbors. Stable parameters typically halt the spread.