• Skip to main content
AlgaeBarn

AlgaeBarn

Marine Aquariums Made Easy!

    • Shop See All
      • Ultimate Packs See All
      • Ultimate Refugium Starter
      • Clam Keeper Kits
      • Ultimate Ecopack
      • Mandarin Feeder Kit
      • Hair Algae Killer Kit
      • See All Ultimate Packs
      • Live Foods See All
      • Copepods
        • Ecopods
        • 5280 Pods
        • Galaxy Pods
        • Poseidon's Feast
        • Tisbe Pods
        • Tig Pods
      • Food Combos
        • Ecopods & Phyto
        • Galaxy Pods & Phyto
        • Poseidon's & Phyto
        • Tig Pods & Phyto
        • Tisbe Pods & Phyto
      • Phytoplankton
        • Oceanmagik
      • Brine Shrimp
        • Simple Brine
        • Nano Brine Shrimp
        • Premium Brine Shrimp Eggs
        • Magnetic Brine Shrimp Eggs
      • Most Popular Products
        • Galaxy Pods 5 Species Copepod Blend

          Galaxy Pods

          $66 – $229
          Shop Now This product has multiple variants. The options may be chosen on the product page
        • Ecopods 4 Pack Special

          $99
          Shop Now
        • Galaxy Pods & Phyto Combo

          $80
          Shop Now
        • 5280 Pods

          $45
          Shop Now
      • Macroalgae See All
      • Clean Macro Series
        • Clean Chaeto
        • Clean Sea Lettuce
        • Clean Green Ogo
        • Clean Mocha Ogo
        • Clean Mocha Spike Sphere
        • Pom Pom
        • Red Ogo
        • Red Spike Sphere
        • Red Spaghetti
        • Red Mangrove
      • Premium Rare Macro
        • Leafy Ogo
        • Blue Hypnea
        • Dragon's Tongue
        • Thick Ogo
      • Most Popular Products
        • Clean Chaeto

          $40 – $125
          Shop Now This product has multiple variants. The options may be chosen on the product page
        • Clean Sea Lettuce

          $30 – $95
          Shop Now This product has multiple variants. The options may be chosen on the product page
        • Red Ogo

          $30 – $80
          Shop Now This product has multiple variants. The options may be chosen on the product page
        • Red Mangrove

          $13
          Shop Now
      • Captive Bred Fish See All
      • Gobies
        • Green Mandarin
        • Court Jester Goby
        • Watchman Goby
        • White Spotted Goby
      • AngelFish
        • Biota Coral Beauty
        • Maculosus Angel
        • Majestic Angel
        • Swallowtail Angel
      • Tangs
        • Yellow Tang
        • Blue Tang
      • More Species
        • Grammas
        • FileFish
        • Blennies
        • Damsel
        • ClownFish
        • RabbitFish
      • Most Popular Products
        • Blue Mandarin

          BIOTA Green Mandarin

          $99 – $209
          Shop Now This product has multiple variants. The options may be chosen on the product page
        • ORA Neon Goby

          $35
          Shop Now
        • Captive Bred Yellow Tangs by BIOTA

          BIOTA Yellow Tang

          $250
          Shop Now
        • ORA Premium Picasso

          $145 – $300
          Shop Now This product has multiple variants. The options may be chosen on the product page
      • Captive Bred Invertebrates See All
      • Clams
        • Ora Derasa Clam
        • Squamosa Clam
        • Ora Gigas Clam
        • Ora Maxima Clam
        • Ora Hippopus Clam
      • Shrimp
        • Ora Peppermint Shrimp
        • Harlequin Shrimp
      • Snails
        • Cerith Snails
        • Trochus Snail
        • Nassarius Snails
      • Urchins
        • Ora Tuxedo Urchin
        • Ora Pincushion Urchin
      • Most Popular Products
        • Animated gif of peppermint shrimp

          Peppermint Shrimp

          $49 – $119
          Shop Now This product has multiple variants. The options may be chosen on the product page
        • 10 Cerith Snails

          Cerith Snail

          $25 – $79
          Shop Now This product has multiple variants. The options may be chosen on the product page
        • pincushion urchin lytechinus variegatus reef safe and captive bred by ora for sale at algaebarn

          Pincushion Urchin

          $29 – $99
          Shop Now This product has multiple variants. The options may be chosen on the product page
        • Gold Maxima Clam Bed

          ORA Maxima Clam

          $80 – $150
          Shop Now This product has multiple variants. The options may be chosen on the product page
      • Corals See All
      • LPS Corals
        • Biota Pearl Bubble
        • ORA Pearl Bubble
        • ORA Marshall Island Goniopora
        • ORA Marshall Island Hammer
      • SPS Corals
        • ORA Pearlberry Acropora
        • ORA Micronesian Imperial Acropora
        • ORA Turquoise Acropora
        • ORA Micronesian Yellow Porites
      • Soft Corals
        • BIOTA White Polyp Toadstool
        • ORA Long Polyp Leather Coral
        • ORA Silver Xenia
        • ORA Pulsing Xenia
      • Frag Packs
      • Most Popular Products
        • Biota Pearl Bubble Coral

          $65
          Notify Me When in Stock
        • ORA Pearlberry Acropora

          $290
          Notify Me When in Stock
        • BIOTA White Polyp Toadstool

          $70
          Notify Me When in Stock
      • Additives & Bacteria See All
      • Live Cultures & Bacteria
        • Turbostart 900 Saltwater
        • Aquarium Cycle Kit
        • Coralline Algae
        • PNS Yellosno
        • PNS Probio™
      • Additives & Chemicals
        • Nitrocycle
        • Clarifier
        • Fritz A.C.C.R
        • Fritz RPM Salt
      • Most Popular Products
        • Mandarin Feeder Kit™

          $66
          Shop Now
        • Coralline Algae in a Bottle, In Pink or Purple!

          Coralline Algae

          $22 – $44
          Shop Now This product has multiple variants. The options may be chosen on the product page
        • MarinePure 10 Cubes

          2″ Cubes

          $5 – $99
          Notify Me When in Stock This product has multiple variants. The options may be chosen on the product page
        • Ultimate EcoPack

          $100
          Shop Now
      • Aquarium Supplies See All
      • Fuge Lighting
        • AI Fuge 16HD Light
        • Kessil A360X Fuge Light
        • Kessil H160
        • Kessil H80
        • Chaetomax
      • Biomedia
        • Marinepure Gems
        • Marinepure Rocks
        • Marinepure Plate
        • Marinepure Cubes
        • Marinepure Spheres
      • Foods
        • Dragon Roe
        • Simple Brine
        • Can'O Cyclops
        • Benereef™
        • Fresco Cyclops
      • Rock & Sand
        • Dry Rock
        • Clam Rocks
      • Most Popular Products
        • Mandarin Feeder Kit™

          $66
          Shop Now
        • Coralline Algae in a Bottle, In Pink or Purple!

          Coralline Algae

          $22 – $44
          Shop Now This product has multiple variants. The options may be chosen on the product page
        • MarinePure 10 Cubes

          2″ Cubes

          $5 – $99
          Notify Me When in Stock This product has multiple variants. The options may be chosen on the product page
        • Ultimate EcoPack

          $100
          Shop Now
      • CADE Aquariums See All
      • Reef Series
        • CADE REEF 500 S2
        • CADE REEF 600 S2
        • CADE REEF 900 S2
        • CADE REEF 1200 S2
        • CADE REEF 1500 S2
        • CADE REEF 1800 S2
        • CADE REEF 2100 S2
      • Frag Series
        • CADE Frag 600 S2/F
        • CADE Frag 900 S2/F
        • CADE Frag 1200 S2/F
        • CADE Frag 1500 S2/F
      • Peninsula Series
        • CADE Peninsula 1200 S2/P
        • CADE Peninsula 1500 S2/P
        • CADE Peninsula 1800 S2/P
      • Most Popular Products
        • CADE REEF 2100 S2

          $7,225
          Shop Now This product has multiple variants. The options may be chosen on the product page
        • CADE Peninsula 1500 S2/P

          $5,525
          Shop Now This product has multiple variants. The options may be chosen on the product page
        • CADE REEF 1200 S2

          $4,125
          Shop Now This product has multiple variants. The options may be chosen on the product page
        • CADE Frag 900 S2/F

          $3,275
          Notify Me When in Stock This product has multiple variants. The options may be chosen on the product page
  • Blog
  • Shipping
  • Our Guarantee
  • Help
  • Deals
  • Sign In
  • Cart
You are here: Home / Corals / ORA Green Hydnophora Coral

ORA Green Hydnophora Coral

  • ORA
  • Shipping Days
    Mon, Tue, Wed, Thu
  • Free Overnight
    Transport at $249+

$75

The Green Hydnophora displays a brilliant, neon green coloration with a unique texture. This uncommon coral is hardy and has relatively easy care requirements, making it a great addition to many aquariums.

***Please note that coral color and appearance vary. Differences in light, glass water parameters, and other factors can change how a coral appears, which means that this coral may look different in your aquarium.***

In stock

Earn 75 PodPoints
Quantity

Save with Subscription:

Total:

$75

Saved

-

  • Description
  • FAQ

Description

The Green Hydnophora is a stony coral originating from the Indo-Pacific. This particular coral is maricultured by ORA in the Marshall Islands. Instead of being collected from delicate reefs, these corals are grown in aquariums on land using seawater or offshore in a controlled area separate from natural reefs. These corals come with many benefits that we will talk about later.

This coral has a branching and encrusting growth pattern. As it grows more branches, the base will spread and encrust on surrounding rock. The branches are dense and irregular, giving the coral a unique form. The coral has a fluffy appearance with a superb bright green coloration.

It is relatively easy to care for, but there are some specific care requirements that you should know to make it as happy as possible.

First, you must keep the coral away from other corals. This coral will likely sting your other corals if you don’t give it enough space. The Green Hydnophora has a potent sting that kills any coral it touches. Space is important.

To display its beautiful green colors, this coral needs intense lighting. You should provide this coral with around 250 micromoles of PAR. When placing any coral under high light, it is essential to acclimate them first. Start your coral in dimmer, more moderate light and gradually move it into higher light. Acclimating your corals will decrease the risk of bleaching and color loss. You can put Hydnophora corals under moderate lighting, but the color will be less intense.

This coral also does best with moderate to strong flow. Water movement is vital for keeping the coral clean while providing nutrients and essential elements. Ideally, you should provide random water flow to avoid dead spots and to promote proper growth.

Being a stony coral, Hydnophora corals require elevated levels of calcium, alkalinity, and magnesium that are reasonably stable. This coral is less sensitive than Acropora, but more stability with your water chemistry is always better. Depending on how many stony corals you have, you may have to supplement your essential elements using a calcium reactor, two-part dosing, or kalkwasser. These methods work great, but using them properly requires some experience. If you are unfamiliar with supplementing your essential elements, dose in moderation until you become more experienced.

Keep your nitrates around 1-5 ppm and your phosphates as close to 0.01 ppm as possible. This is a safe target range but not a strict rule. Keep your temperature between 72-78 degrees Fahrenheit and stable.

Finally, let’s discuss feeding. Like most corals, this coral contains zooxanthellae, which provide most of the coral’s nutritional needs via photosynthesis. Because of this, the coral doesn’t require feeding. However, feeding you corals can increase coloration, growth rate, and overall health. Feeding your corals is beneficial if you don’t cause nutrient spikes. This coral is a particularly aggressive feeder. It will eat small meaty foods from mysis to powdered coral foods. Dosing phytoplankton and amino acids is a great alternative. This method will keep your corals fed without causing nutrient spikes.

Care requirements

Placement: You can place this coral anywhere with lots of space from other corals as long as you meet its lighting and flow requirements.

Lighting: Medium to high.

Flow: Moderate to strong.

Parameters:  72-78° F, pH 8.1-8.4, salinity 32-35 ppt

Calcium: 350-450 ppm

Alkalinity: 8-12 dKH

Magnesium: 1,250-1,350 ppm

Benefits of mariculture

Maricultured corals such as this Green Hydnophora from ORA are hardier and better able to handle the stress of shipping than coral collected from reefs. These corals are also more sustainable and environmentally friendly. Please do your part to decrease our hobby’s negative impact on the ocean by choosing mariculture and aquaculture.

FAQ

Weight 3 lbs

Latest News from the AlgaeLab

Our team is hard at work studying how marine ecosystems behave so that you can build your tank with the perfect components!

PNS Deep Cycle

Harnessing the Power of PNS Deep Cycle for a Thriving Reef Aquarium

Reef aquariums are a testament to the beauty and complexity of marine ecosystems. Yet, one fundamental difference sets them apart from natural coral

Read More about Harnessing the Power of PNS Deep Cycle for a Thriving Reef Aquarium

How hard is it to keep a refugium?

Adding a refugium to the reef tank system can be a game changer for some reef keepers! Most experienced hobbyists agree that a refugiums’ natural

Read More about How hard is it to keep a refugium?

Keeping the Gigas Clam

There is something almost archetypal in the legend of man-eating clams. Perhaps this evokes allegorical imagery of a greedy or overly plucky sort of fool

Read More about Keeping the Gigas Clam

More Great Products

  • Biota Orange Plate Coral

    $85
    Notify Me When in Stock
  • BIOTA Yellow/Green Sinularia

    $60
    Notify Me When in Stock
  • Biota Green Yuma Mushroom Anemone

    $40
    Notify Me When in Stock
  • ORA Australian Delicate Acropora

    $75
    Shop Now

Company

  • About Us
  • The AlgaeLab Blog
  • Our Team
  • Careers
  • FAQ

Get in Touch

  • Contact Us
  • AOA Claim Form
  • Press Inquiries
  • Call Us: 772-444-7637

Policies

  • Legendary AOA Guarantee
  • Terms & Conditions
  • Privacy Policy
  • Accessibility Statement

Other

  • Store Locator
  • Wholesale & B2B inquired
  • Business Location

Subscribe to our Newsletter

Join our mission to build a more sustainable aquarium hobby, one tank at a time!

Copyright 2025, AlgaeBarn LLC - Live Copepods and Phytoplankton