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        • Galaxy Pods 5 Species Copepod Blend

          Galaxy Pods

          $66 – $229
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        • Ecopods 4 Pack Special

          $99
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        • Galaxy Pods & Phyto Combo

          $80
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          $45
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      • Macroalgae See All
      • Clean Macro Series
        • Clean Chaeto
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      • Premium Rare Macro
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      • 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
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        • Red Ogo

          $30 – $80
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        • Red Mangrove

          $13
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        • Blue Mandarin

          BIOTA Green Mandarin

          $99 – $209
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        • ORA Neon Goby

          $35
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        • Captive Bred Yellow Tangs by BIOTA

          BIOTA Yellow Tang

          $250
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        • ORA Premium Picasso

          $145 – $300
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      • Captive Bred Invertebrates See All
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      • Most Popular Products
        • Animated gif of peppermint shrimp

          Peppermint Shrimp

          $49 – $119
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        • 10 Cerith Snails

          Cerith Snail

          $25 – $79
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        • pincushion urchin lytechinus variegatus reef safe and captive bred by ora for sale at algaebarn

          Pincushion Urchin

          $29 – $99
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        • Gold Maxima Clam Bed

          ORA Maxima Clam

          $80 – $150
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        • Biota Pearl Bubble Coral

          $65
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        • ORA Pearlberry Acropora

          $290
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          $70
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      • Most Popular Products
        • Mandarin Feeder Kit™

          $66
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        • 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
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        • Ultimate EcoPack

          $100
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      • Aquarium Supplies See All
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      • Most Popular Products
        • Mandarin Feeder Kit™

          $66
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        • 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
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      • CADE Aquariums See All
      • Reef Series
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      • Most Popular Products
        • CADE REEF 2100 S2

          $7,225
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        • CADE Peninsula 1500 S2/P

          $5,525
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        • CADE REEF 1200 S2

          $4,125
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        • CADE Frag 900 S2/F

          $3,275
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Aquarium Store
  • Ultimate Packs
    • Ultimate Refugium Starter Pack
    • Ultimate Macroalgae Pack
    • Ultimate EcoPack
    • Hair Algae Killer Kit
  • Live Foods
    • Copepods
      • EcoPods
      • 5280 Pods
      • Galaxy Pods
      • Poseidon’s Feast
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      • Tig Pods
    • Food Combos
      • EcoPods & Phyto
      • Galaxy Pods & Phyto
      • Poseidon’s & Phyto
      • Tig Pods & Phyto
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    • Phytoplankton
      • OceanMagik
    • Brine Shrimp
      • Simple Brine
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  • Macroalgae
    • Clean Macro Series
      • Clean Chaeto
      • Clean Sea Lettuce
      • Green Ogo
      • Mocha ogo
      • 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
  • Fish
    • Gobies
      • Green Mandarin
      • Court Jester Goby
      • Watchman Goby
      • White Spotted Dwarf
    • Angelfish
      • BIOTA Coral Beauty
      • Maculosus Angel
      • Majestic Angel
      • Swallowtail Angel
    • Tangs
      • Yellow Tang
      • Blue Tang
    • More Species
      • Grammas
      • Filefish
      • Blennies
      • Damselfish
      • Clownfish
      • Rabbitfish
  • Invertebrates
    • Clams
      • ORA Derasa Clam
      • ORA Squamosa Clam
      • ORA Gigas Clam
      • ORA Maxima Clam
      • ORA Hippopus Clam
    • Shrimp
      • Peppermint Shrimp
      • Harlequin Shrimp
    • Snails
      • Cerith Snail
      • Trochus Snail
      • Nassarius Snails
    • Urchins
      • Tuxedo Urchin
      • Pincushion Urchin
  • Corals
  • Additives & Bacteria
    • 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
  • Aquarium Supplies
    • Fuge Lighting
      • AI Fuge 16HD Light
      • Kessil H380
      • Kessil H160 Tuna Flora
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      • ChaetoMax
    • Biomedia
      • MarinePure GEMs
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    • Foods
      • Dragon Roe
      • Simple Brine
      • Can O’ Cyclops
      • BeneReef™
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    • Rock & Sand
      • Dry Live Rock – Core Rock
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  • Aquariums
    • CADE REEF 600 S2
    • CADE REEF 900 S2
    • CADE REEF 1200 S2
    • CADE REEF 1500 S2
    • CADE REEF 1800 S2

Macroalgae

Macroalgae is a wonderful organism to implement in your aquarium because it can help export nutrients and provide breeding grounds for copepods. One of the biggest and most discussed indicators of high nutrients is rapid algae growth. If you have a monstrous amount of hair algae or that yucky film algae, it is most likely due to a high amount of nitrates and phosphates. These nutrients are like food for the algae. As long as it has food, along with light, it will continue to grow. You could scrape the algae off the glass and scrub the rocks every day and it will still grow back. There are many solutions to this problem. You could use a protein skimmer, but even with a protein skimmer, you may still have a nutrient overload issue. Water changes are another thing you can do, although you should do water changes anyway. You could feed less or turn down the intensity of your lights. A combination of all these things is best, but what if you fought the algae with algae? Macroalgae is a large, plant-like form of algae. Another name for macroalgae is seaweed. Like the nuisance algae, macroalgae feeds off the nutrients in the water. As it absorbs the phosphates and nitrates from the water, the annoying algae will have less food, causing it to grow slower. Even if you do not have an algae problem, using macroalgae can be beneficial because it will prevent algae from becoming a problem. Macroalgae is mostly used in refugiums or the refugium section of a sump. These macroalgae can also act as a habitat for copepods in your refugium. The copepods will eat detritus the collects in the algae and reproduce. Tiny crustaceans such as copepods and rotifers love to live in macroalgae. Along with that, some macroalgae can be used for aesthetic purposes. Dragon’s Tongue algae, which is red with a branching pattern, looks particularly beautiful in a unique way. Sea Lettuce algae can be used to add a more natural look as well. Macroalgae is more than just algae. This plant-like algae will assist in removing nutrients, provide a place for copepods to breed, and it can add some natural depth to your display tank.

22 Products

  • Ultimate Macroalgae Pack

    $89 – $109
    Notify Me When in Stock 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
  • Ultimate Refugium Starter Pack

    $148.99 – $1,698.99
    Shop Now This product has multiple variants. The options may be chosen on the product page
  • Clean Chaeto

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

    $13
    Shop Now
  • Caulerpa prolifera

    $30 – $80
    Notify Me When in Stock This product has multiple variants. The options may be chosen on the product page
  • Pom Pom

    $30 – $150
    Notify Me When in Stock This product has multiple variants. The options may be chosen on the product page
  • Sea Grapes – Caulerpa racemosa

    $30 – $80
    Notify Me When in Stock This product has multiple variants. The options may be chosen on the product page
  • Green Ogo

    $15
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  • Red Mangrove Buy 2 Get 1 FREE

    $26
    Shop Now
  • Dragons Tongue macroalgae

    Dragon’s Tongue

    $45
    Notify Me When in Stock
  • leafy sphere Ogo Macroalgae at AlgaeBarn

    Leafy Ogo

    $35
    Notify Me When in Stock
  • Our Blue Hypnea under AI White Lighting

    Blue Hypnea

    $30
    Notify Me When in Stock
  • gracilaria tikvahiae spike sphere macro algae for refugiums and saltwater fish tanks

    Red Spike Sphere

    $15 – $120
    Notify Me When in Stock This product has multiple variants. The options may be chosen on the product page
  • Dragon’s Breath Macroalgae

    $50
    Notify Me When in Stock
  • AlgaeBarn CleanMacro - Mocha Spike Sphere

    Mocha Spike Sphere

    $15 – $120
    Notify Me When in Stock This product has multiple variants. The options may be chosen on the product page
  • Algaebarn Red Spaghetti Ogo (Gracilaria Pacifica) Macroalgae

    Red Spaghetti

    $15 – $120
    Notify Me When in Stock This product has multiple variants. The options may be chosen on the product page
  • Algaebarn Clean Mocha Ogo Macroalgae

    Mocha ogo

    $15 – $120
    Notify Me When in Stock This product has multiple variants. The options may be chosen on the product page
  • Monkey Finger

    $15 – $120
    Notify Me When in Stock This product has multiple variants. The options may be chosen on the product page
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