Arches LifeRock Dry Live Rock

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Life Rock Arches gives any marine aquarium a dramatic, more 3 dimensional aquascape without disrupting circulation flow. LifeRock is infused with spored bacteria to aid in biological performance, along with millions of micro and macro passage ways CaribSea's Arches Dry Rock is perfect for the environmentally friendly aquarist.

  • Creates a mature looking reef instantly
  • 100% safe for all marine animals
  • Unique pieces
  • Environmentally friendly


CaribSea LifeRock is made of an aragonitic base rock, instead of the typical cement used by many other artificial rock creators. Every rock contains a network of micro and macro pores that intertwine within the rocks internal structure creating the perfect environment for natural nitrifying bacteria. LifeRock is manmade and does not affect our natural resources, making it the perfect option for all marine fish, invertebrates, and corals. 


Every LifeRock from CaribSea has an artificial coating and texture that mimics natural coralline algae after being in the ocean for years. Depending on the animals that you have in your aquarium, they may pick at the coating on the rocks which will not harm them at all, and over time live coralline algae will cover any spots on the rocks that may have had the coating picked off.


How many pieces are In each box?

Typically 4 pieces are included in every box of LifeRock Arches Dry Live Rock


How big are the pieces?

Sizing can range from 10" up to 12"


Can I request specific shapes and sizes?

Unfortunately, we are unable to take requests for specific shapes and sizes for CaribSea LifeRock. 


How much rock do I need?

Knowing exactly how much Dry Live Rock you will need can be one of the hardest questions to answer since every tank and rock will be slightly different. A general guideline for dry Live Rock, we suggest 1 pound of rock per gallon of display tank volume and may vary depending on your overall goal for the aquascape. We always recommend purchasing a little extra dry rock to ensure that you will have enough to complete the aquascape you are looking for, any extra rock can always be broken up and placed in your refugium, overflows, and sump for added filtration.


What's Included?

20lbs CaribSea LifeRock Arches


Shipping: Branch rock can be fragile. BRS makes every effort to securely pack any type of rock. However, we have no control how UPS handles it and it may break during shipping. Unfortunately, this is not covered by insurance so we are unable to replace broken pieces.

More Information
UPC 008479003898
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Product Questions

Does this need to be cured before adding to an established reef tank
Question by: Thomas on May 10, 2023, 5:52 AM
It does not, no :)
Answer by: Ash (BRS Staff) on Jun 2, 2023, 2:34 PM