LifeRock Tree Extension Kit

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CaribSea’s LifeRock Tree Extention Kit provides additional rock pieces and a support rod to add interesting features to your aquascape. Don't worry about having to drill or hammer your rock, CaribSea has taken care of the hard part. The Tree Extension Kit includes two hand-made arching rock pieces with naturally varying shapes, which are pre-drilled to accept the stabilizing rod which will hold everything in place. Once your dream rockscape is in place, you can secure the rock into a solid structure with the addition of some MarcoRocks Aquascaping Mortar.



  • Perfect reef tanks of all sizes
  • Great for adding to Reef Tree and Coral Tree Kits
  • Create custom combinations for a unique rockscape
  • Creates a mature looking reef instantly
  • 100% safe for all marine animals
  • Sustainable & 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 also infused with spored bacteria to aid in biological performance. CaribSea's LifeRock kits are perfect for the environmentally friendly aquarist. 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 much rock is included in this kit?

There are 2 pieces of rock included with this kit. The size and shape will vary, but you can typically expect to get about 10-12lbs of rock with your kit.


How big are the pieces?

There are a variety of rock sizes ranging from 8" - 12" at the widest point. Every rock is handmade and the dimensions will vary.


Can I request specific shapes and sizes?

Due to the unique and pre-kitted nature of of these kits, we are unable to take requests for specific sizes, shapes, or weights.


What's Included?

1x CaribSea LifeRock Tree Extension Kit


Shipping: BRS makes every effort to securely pack the Rock. However, the UPS automation is not always gentle on heavy products like this and they do not consider this product insurable. Because of this, there is some inherent risk with shipping rock like this across the country and it is impossible to replace or refund broken pieces. If this happens most pieces can be repaired with glue and epoxy.

More Information
UPC 008479003522
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Product Questions

How long is the rod?
Question by: Kristine Mangan on Jun 5, 2022, 7:33 AM
Thanks for the question! The rod is 5-7" from the information we could find on this with CaribSea. Let us know if you have any additonal questions!
Answer by: Kyle Thomas (BRS Staff) on Jun 7, 2022, 11:22 AM