QUICK STATS

Care Level: Easy to Moderate
Coral Type: LPS / Hammer Coral / Euphyllia-Type Coral
Temperament: Semi-Aggressive
Photosynthetic: Yes
Placement: Lower to Middle / Rockwork
Lighting: Moderate
Water Flow: Low to Moderate, Indirect
Approximate Purchase Size: Varies by Frag Size
Approximate Max Size: Colony Growth Depends on Stability, Space, Lighting, Flow, and Feeding

ECC SOUR APPLE HAMMER CORAL

The ECC Sour Apple Hammer Coral is a colorful LPS coral known for its bright green to yellow-green coloration, fleshy hammer-shaped tentacles, and soft waving movement in reef aquariums. Depending on the specimen and lighting, it may show neon green, lime green, yellow-green, chartreuse, sour apple green, gold-green, or glowing fluorescent tones across the tentacles and tips.

This coral is best treated as a collector-style Hammer Coral, commonly placed in the Euphyllia-type care group. Hammer corals may be listed under Euphyllia ancora, Euphyllia parancora, or related hammer-style classifications depending on growth form and vendor naming. In plain English: it is a hammer coral, the names got shuffled, and the coral itself has no interest in our paperwork.

ECC Sour Apple Hammer Coral is popular because it adds bright color, movement, and LPS texture without usually requiring intense lighting or harsh SPS-style flow. It works well in mixed reefs, Euphyllia gardens, and lower-to-middle rockwork where it can sway without being blasted like it owes the return pump money.

The ECC Sour Apple Hammer Coral is photosynthetic and receives much of its energy from reef lighting. It can also benefit from occasional feeding, especially when offered small meaty foods or LPS-appropriate coral foods. Feeding may help support growth, tissue fullness, and new head development.

This coral is considered semi-aggressive. Hammer corals can extend sweeper tentacles and may sting nearby corals, especially at night or when crowded. Give it space from neighboring corals, particularly other LPS, soft corals, SPS, and anything you would prefer not to watch slowly lose a territorial dispute.

Note: Image is a representation of what to expect. The coral you receive may vary slightly in size, number of heads, branch structure, tentacle shape, green intensity, yellow tone, polyp extension, and overall appearance.

AQUARIUM REQUIREMENTS

AQUARIUM SIZE

A minimum aquarium size of 20-30 gallons or larger is recommended for ECC Sour Apple Hammer Coral, though larger mature reef systems are preferred. Larger aquariums provide better water stability, more placement options, and more room for sweeper tentacles and colony growth.

Hammer corals do not require massive aquariums, but they do appreciate stable reef conditions. Smaller tanks can work, but swings in salinity, alkalinity, nutrients, and temperature happen faster. Convenient, if your hobby goal is turning minor mistakes into dramatic biological feedback.

PLACEMENT RECOMMENDATIONS

ECC Sour Apple Hammer Coral is best placed in the lower to middle areas of the aquarium where it receives moderate lighting and low to moderate indirect flow. It should be secured on rockwork where the fleshy polyps can expand without rubbing against sharp edges or neighboring corals.

Rock Placement: Place on stable lower-to-middle rockwork with room for full polyp extension.

Sandbed Placement: Temporary sandbed placement can work during acclimation, but long-term placement is usually better on rockwork if the frag is branching and can be secured.

Euphyllia Garden Placement: Hammer corals can often be placed near other hammer corals, but space should still be provided. Mixing with torches requires more caution because torches are often more aggressive.

Spacing: Leave several inches between this coral and nearby corals. Sweeper tentacles can extend beyond the normal polyp size.

Avoid High SPS Zones: Do not place this coral in intense light and strong direct flow meant for Acropora. That is not premium care. That is LPS harassment with expensive equipment.

WATER PARAMETERS

ECC Sour Apple Hammer Coral is fairly forgiving for an LPS coral, but it still needs stable reef conditions. Stable parameters are more important than chasing exact numbers. Sudden swings can cause poor extension, tissue recession, bleaching, color fading, brown jelly infection risk, or head loss.

Temperature: 75-79°F
pH Level: 8.1-8.4
Salinity: 1.024-1.026 specific gravity
Alkalinity: 8-10 dKH
Calcium: 400-450 ppm
Magnesium: 1250-1350 ppm
Nitrate: 5-15 ppm
Phosphate: 0.03-0.10 ppm

Hammer corals often do best in reef systems with some available nutrients rather than ultra-sterile water. Keep nitrate and phosphate detectable but controlled. The goal is “fed reef,” not “nutrient swamp,” which is apparently a distinction humanity must keep relearning.

LIGHTING

ECC Sour Apple Hammer Coral prefers moderate lighting. A general target range of 75-150 PAR works well for many hammer corals, with many thriving around 100-150 PAR once acclimated.

LIGHTING RECOMMENDATIONS

Moderate PAR: Start around 75-100 PAR if newly added, especially if the coral is freshly shipped or coming from lower light.

Gradual Acclimation: If moving into stronger light, increase exposure slowly over several days to weeks.

Color Display: Sour Apple Hammer Coral often shows its best neon green, yellow-green, lime, and chartreuse tones under moderate reef lighting with a blue-heavy spectrum.

Too Much Light: Signs may include bleaching, faded color, retracted tissue, tight polyps, or exposed skeleton.

Too Little Light: Signs may include dull coloration, stretching, reduced growth, or weak extension over time.

Do not place a fresh Sour Apple Hammer directly under a light cannon because the color looked radioactive. That is not reef keeping. That is using photons as a blunt instrument.

WATER FLOW

ECC Sour Apple Hammer Coral prefers low to moderate indirect flow. The tentacles should sway gently and rhythmically, not whip violently or stay pinned to one side.

FLOW RECOMMENDATIONS

Ideal Flow: Low to moderate, indirect, pulsing, or gently varied flow.

Avoid Direct Flow: Strong direct flow can cause tissue irritation, poor extension, skeleton damage, or tissue recession.

Avoid Dead Spots: Too little flow can allow detritus to collect between heads or around the skeleton, which may irritate tissue.

Watch Tentacle Movement: Healthy flow should make the tentacles move softly. If they are thrashing, folded tightly, or slamming into the skeleton, the flow is too strong.

Colony Growth: As the hammer grows more heads, flow may need adjustment so the center of the colony does not trap debris.

The goal is gentle waving, not turning the coral into one of those inflatable tube men outside a used car lot. Reef tanks have suffered enough indignity.

DIET

ECC Sour Apple Hammer Coral is photosynthetic, but it can benefit from occasional feeding. Feeding may help support polyp fullness, growth, new head development, and overall resilience.

PRIMARY DIET

Photosynthesis: Moderate reef lighting provides much of the coral’s energy through symbiotic zooxanthellae.

Target Feeding: Offer small meaty foods directly to the polyps when feeding response is visible.

Frozen Food: Mysis shrimp, enriched brine shrimp, finely chopped seafood, reef blends, and other small LPS-appropriate frozen foods can be used.

Prepared Coral Foods: LPS pellets, powdered coral foods, and suspended coral nutrition may be accepted.

Amino Acids / Coral Nutrition: Amino acids and LPS coral supplements can be used carefully in established systems.

Particle Size: Use small foods. Large chunks may be rejected or rot against the tissue, because even coral apparently has standards.

FEEDING FREQUENCY

Feed 1-2 times per week if desired. Hammer corals do not need heavy feeding, and overfeeding can raise nutrients or irritate the coral.

Turn down flow briefly during feeding if needed. Restore normal flow after the coral has had time to capture food.

COMPATIBILITY

ECC Sour Apple Hammer Coral works well in mixed reef and LPS-focused aquariums when placed with proper spacing, moderate lighting, and gentle indirect flow.

COMMON TANK MATES

Fish: Reef-safe fish such as clownfish, gobies, blennies, wrasses, cardinalfish, firefish, tangs, anthias, and other peaceful to semi-peaceful community fish.

Avoid: Fish known to nip fleshy LPS corals, such as some angelfish, butterflyfish, puffers, filefish, and certain triggers.

Invertebrates: Generally safe with cleaner shrimp, snails, hermit crabs, and other common reef invertebrates. Some shrimp may steal food during target feeding because apparently tiny crustacean crime is part of the package.

Coral: Keep away from aggressive corals such as torches, galaxea, favias, chalices, hydnophora, acans, and other stinging LPS.

Euphyllia Neighbors: Hammer corals are often more tolerant of other hammers than unrelated corals, but spacing is still recommended. Torches should be given extra room.

SPS Nearby: Avoid placing SPS too close. Hammer coral sweepers and tissue expansion can damage nearby SPS.

BEHAVIORAL NOTES

Temperament: Semi-aggressive. Hammer corals can extend sweeper tentacles and sting nearby corals.

Growth Pattern: May grow as a branching hammer with separate heads or as a wall-type hammer depending on the specimen. Branching forms are generally easier to frag and manage.

Coloration: May show neon green, lime green, yellow-green, chartreuse, sour apple green, gold-green, or fluorescent green depending on lighting, nutrients, stability, and photography conditions.

Polyp Extension: Healthy hammers should expand fully once settled. Poor extension may indicate too much flow, too much light, unstable parameters, pests, irritation, or nearby aggression.

Tentacle Shape: Hammer corals have anchor, hammer, or sausage-like tentacle tips rather than the long thin tentacles of torch corals.

Sweeper Tentacles: Sweeper tentacles may appear at night or during aggression. Leave enough space around the coral.

Skeleton Safety: Avoid placing fleshy tissue against sharp rock edges or exposed skeleton.

Brown Jelly Risk: Like other Euphyllia-type corals, hammer corals can be vulnerable to brown jelly infections, especially after damage, stress, or tissue injury. Rapid tissue loss should be addressed quickly.

Head Splitting: Branching hammer corals may develop new heads or split existing heads when growing well.

Dipping: Coral dipping before introduction is strongly recommended. Use coral-safe dips according to product directions and inspect the skeleton and plug closely.

Pest Awareness: Inspect carefully for flatworms, nudibranchs, algae, vermetid snails, sponge growth, and other hitchhikers before placing into the display.

Frag Handling: Handle by the plug, base, or skeleton whenever possible. Avoid touching, squeezing, or tearing the fleshy polyps.

Placement Reality: This coral can become a bright green LPS showpiece, but it needs space. Hammer corals look soft and graceful, then sting their neighbors like tiny glowing legal disputes.

ACCLIMATION PROCESS

This acclimation method helps reduce stress by gradually introducing the coral to your aquarium’s temperature, lighting, and water chemistry.

1. DIM THE LIGHTS

Turn down aquarium lights or place the coral in a shaded lower area at first. This helps reduce stress while the coral adjusts.

2. FLOAT THE BAG

Float the sealed bag in the aquarium for 15-20 minutes to allow the temperature in the bag to equalize with the tank.

3. OPEN BAG, ADD CORAL TO CONTAINER

Carefully open the bag and transfer the coral and shipping water into a clean container. Handle the coral by the plug, base, or skeleton rather than touching or squeezing the fleshy polyps.

4. ACCLIMATE USING TANK WATER

Add small amounts of tank water to the container every few minutes for 20-30 minutes. Avoid exposing the coral tissue to air longer than necessary.

5. CORAL DIP

Use a coral-safe dip according to the product instructions. Inspect carefully for pests, algae, sponge growth, vermetid snails, tissue damage, and hitchhikers before the coral enters your aquarium.

6. TRANSFER CORAL TO AQUARIUM

Place the coral in a lower-to-moderate light area with gentle indirect flow at first. Discard the shipping and dip water. Do not pour shipping water or dip water into your aquarium.

7. LIGHT ACCLIMATE

Allow the coral to adjust gradually over several days to weeks before moving it into brighter light. Watch for polyp extension, tissue inflation, coloration, feeding response, and new head growth before making major placement changes.