Reef Saver Shelf Aquarium Dry Live Rock

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MarcoRocks Shelf Rock is sold by the pound

Premium MarcoRocks Shelf Rock

  • 100% Pest Free
  • Sustainable Choice
  • Optimal Biological Filtration


Create Beautiful Aquascapes

Our ability to mimic natural reef structures is only as good as the rock we have to work with. Lucky for us, there is MarcoRocks Premium Shelf Rock. Shelf Rock is perfect for creating layered aquascapes with overhangs and caves for visual interest. Unlike some other types of shelf rock available, MarcoRocks Shelf Rock is a natural product and not machined flat, giving it a more natural look. We recommend stacking the rocks as horizontal as possible and cementing them together at key junctions with E-Marco-400 mortar to secure them in place.

Typical Size Range: 5" to 15" Long (measured at the longest distance)


Pest Free

Because it's not taken from the ocean, Shelf Rock offers a pest-free start to your aquarium. No worrying about introducing fish parasites, coral pathogens, or annoying algae. The rock's natural porosity also makes it an excellent medium for beneficial bacterial growth, crucial for a balanced and healthy ecosystem.



This all-natural calcium carbonate rock is harvested from dry areas that were once ancient reefs. Often, you can spot fossilized corals and shells within the rock. Because it is not harvested from a marine environment, it has no negative impact on our delicate reef or marine ecosystem. Combine this with MarcoRock's unique no-chemical cleaning and processing and you get great looking environmentally friendly rock.


How Much Rock Do I Need?

How much rock you need may vary slightly depending on your overall goal for the aquascape, but as a general rule of thumb, 1 pound of Shelf Rock per gallon of tank volume will be a good start. Always consider purchasing a bit extra to ensure you have enough material to achieve your desired look. Any extra rock can always be broken up and placed in your refugium or sump for added biological filtration.


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 epoxy.

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Product Questions

I'm looking for aquascape for my 75 gallon. How many large pieces would you guys recommend?
Question by: Philip Garrett on Apr 2, 2024, 11:22 AM
Hey there! It is typically recommended to have around as many pounds of live rock as you do gallons of water, so you are looking for around 75 lb of rock! Please note that our rock is sold by the pound, and not per individual rock.
Answer by: Laura (BRS Staff) on Apr 30, 2024, 4:01 PM
Can I ask for larger pieces, or are they all completly random?
Question by: Michael Caruso on Nov 2, 2019, 7:03 PM
Hey there-

Great question! If you request larger pieces in the order comments during checkout our warehouse will do their best to accommodate your request. Happy reefing! :)
Answer by: Brad Ohmann on Nov 3, 2019, 11:26 AM