Codium

$35.00

  • Scientific Name: Codium fragile (common aquarium species)

  • Common Names: Codium, Dead Man’s Fingers, Velvet Algae

  • Type: Green macroalgae

  • Growth Pattern: Bushy, finger-like or branching tufts

  • Tank Placement: Display tank, refugium, or sump

  • Moderate nutrient uptake: Absorbs nitrate and phosphate

  • Non-invasive: Slow-growing and doesn't root aggressively

  • Pod-friendly: Provides shelter for amphipods and copepods

  • Display-safe: Adds a lush, velvety texture to aquascapes

  • Tolerant: Handles a range of conditions and lighting

You will receive x1 Clump of Codium Macro Algae

  • Scientific Name: Codium fragile (common aquarium species)

  • Common Names: Codium, Dead Man’s Fingers, Velvet Algae

  • Type: Green macroalgae

  • Growth Pattern: Bushy, finger-like or branching tufts

  • Tank Placement: Display tank, refugium, or sump

  • Moderate nutrient uptake: Absorbs nitrate and phosphate

  • Non-invasive: Slow-growing and doesn't root aggressively

  • Pod-friendly: Provides shelter for amphipods and copepods

  • Display-safe: Adds a lush, velvety texture to aquascapes

  • Tolerant: Handles a range of conditions and lighting

You will receive x1 Clump of Codium Macro Algae

 

Parameter Ideal Range

Temperature 72–78°F (22–26°C)

Salinity 1.024–1.026

pH 8.1–8.4

Alkalinity 8–12 dKH

Nitrate 2–10 ppm

Phosphate 0.02–0.1 ppm

Calcium 400–450 ppm

Magnesium 1250–1350 ppm

✅ Codium tolerates moderate nutrient levels, and doesn’t need aggressive dosing.

Browning/melting tips: Lack of nutrients or poor lighting

Soft/mushy structure: Decomposition—trim and stabilize water

No growth: Could be low light or ultra-clean tank

📦 Acclimation

  1. Float to temperature match (15–30 min)

  2. Drip acclimate for 30–60 minutes

  3. Rinse in clean tank water (optionally RODI rinse if unsure of pests)

  4. Place in a moderately lit, well-circulated area

  5. Let it adjust before increasing light or moving to more exposed areas

💡 Lighting

  • Moderate to high light

  • Thrives under typical reef LEDs or T5 lighting

  • Best coloration under full-spectrum lights with some red and blue for photosynthesis

Photoperiod: 8–12 hours/day

🌊 Flow Requirements

  • Prefers moderate to strong flow

  • Helps prevent detritus buildup and encourages natural swaying movement

  • Place in an area with good circulation but not direct blast from a powerhead

🪴 Placement

  • Can be wedge-mounted into rock crevices or glued to rubble

  • Can also be free-floating in a refugium or sectioned area of the display

  • Can attach itself loosely over time with holdfasts

🍽️ Nutrient and Trace Element Needs

  • Absorbs nitrate and phosphate, but doesn’t demand high levels

  • Benefits from iodine, iron, and general trace supplements—especially in ultra-low nutrient systems (ULNS)

  • Thrives on fish waste, making it a great match for mixed reef or FOWLR tanks

✂️ Pruning & Maintenance

  • Grows slowly—minimal pruning needed

  • Trim damaged or dying branches

  • Shake off detritus if it collects in the arms

  • Monitor for any tissue browning, which can signal nutrient or light issues

🔬 Compatibility

  • Reef-safe

  • Generally ignored by herbivores, including tangs and angelfish (though large Rabbitfish may nibble occasionally)

  • Safe with inverts and soft/hard corals

  • Not invasive, unlike Caulerpa species

 
 

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