Bulk Reef Supply

BRS Tonga Large 20”+ Shelf Dry Live Rock (RETIRED)

In stock

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Tonga Jumbo 20"+ Shelf Rock has a minimum diameter at its longest point of 20" or larger.

Sold by the Pound - Minimum order 20 lbs


Jumbo 30"+ shelf is, perfect for overhangs, caves and holding lots of corals in large tanks. Free of nuisance algae and pests. Shelf with base pieces is more three dimensional than the flatter plate pieces. For jumbo pieces, please specify your request in the comments area during checkout. We are unable to guarantee pieces with or without bases over 20 inches. Customer service will contact you for more details if required.


BRS recommends curing all rock before being used in an established system


Like all of our dry rock Tonga Shelf is free of nuisance algae and pests which can cause complete tank shut downs and is guaranteed to be free of apitasia, bubble algae, parasitic isopods, mantis shrimp, acro eating flat worms, little red bugs, fire worms, predatory nudibranchs, pyramidellid snails and other common pests.


Using Dry Rock has the following advantages:

  • Low initial cost on premium types of rock.
  • Pound for pound a way better value - no water weight.
  • Can be shipped standard UPS ground which saves a fortune on shipping.
  • Absolutely pest free. This is the most important reason. This allows you to completely avoid all of the most common aquarium pests that plague most aquarists.


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 Tonga Shelf 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.


Rock Selection: Due to the wide variety of unique sizes and shape of this rock it is impossible to fulfill orders to exact dimensions but we are happy to make every attempt to get as close as possible if you leave notes on what you are looking for in the order comments section of the checkout.


Picking: When ordering rock any notes for size, shape, or concerns can be left in the "Order Comments" field during check-out step #3. Our picking department will do the best to follow the notes on the order. Please note that all Large 20" + Shelf Rock will have a diameter of at least 20" at its longest point.


Shipping Notes: Tonga Shelf can be fragile. BRS makes every effort to securely pack the Tonga Shelf.  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.


Note: Dry live rock is not available for shipment to Canada due to high tariffs. Please consider Reef Saver rock as this is not subject to these fees and our favorite of the dry rocks available. 

More Information
SKU 000714
Out of stock message Retired
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Product Questions

How do I cut the base of a base on a large Tonga shelf so that it sits flat on the bottom? With a hacksaw like Pukani? Can I drill holes for frags?
Question by: Lia deBettencourt on Mar 16, 2018, 12:41 PM
The base may be cut flat with a hack saw. However my preferred method to mount shelf rock is by fixing the base to a large tile that can be hidden below the sand. Use extra thick coral glue and insta-set spray to glue the rock to the tile. You can use rock rubble to fill gaps as well. The shelf rock may be drilled for frag plugs.
Answer by: Chad Vossen on Mar 19, 2018, 3:43 PM
how much does each 20" piece weigh approx.
Question by: Eric Miller on Feb 5, 2018, 4:43 PM
Hey there,
These weigh a min of 20lbs each.
Answer by: Tyler Schafer on Feb 11, 2018, 1:27 PM