Need Help? Call us at 1-317-895-9005
or email us at

Proudly serving Aquarists since 1996

Key Largo Prime Foundation Cut Rock - 1 Side Cut, 1 Side Natural (Sold per LB)

$5.94 was $ 6.99
Item #
Eligible for Free Shipping Program
In Stock

NOTE: This rock is completely DRY, not alive and can ship safely UPS Ground. Rock is sold per LB (not per piece).

Our Popular Key Largo Rock Cut flat on one side, left natural on the other

-Great for back walls, overflows, tank bottoms, shelves and lots more
-Average size is ~8"-12" If you have specific requests please be sure to note that in your order
-Average coverage is ~5-6Lbs /sq Foot

Natural calcium carbonate rock

An exciting new rock from MarcoRocks puts a new meaning in "Reef Safe"

"Reef Safe" This product will never ever be collected from a living reef

A product of the USA

The best base rock you will find for your aquarium. Each box is hand packed by a reef tank enthusiast to ensure you will get what you need and want for your reef tank or salt water aquarium. Marco Rock dry base rock is the most porous, lightweight and has the greatest surface area of any rock we have seen. Marco Rocks the finest dry rock makes the finest live rock available. 

Customer Reviews

You must be logged in to post a product review.

Great rock! Premium Aquatics hooked it up Sep 25, 2019
This rock is pretty expensive at some other stores, but premium aquatics hooked me up with 5 really nice pieces upon my request. Total weight was 42 pounds and it by far exceeded my expectations. Priced out at some other places and I would be paying twice as much since they sell per piece not by the lb. Best base rock for creating stable foundation to build your aquascape on. Unique shapes and very porous. Beautiful rock. Thanks Premium l!
Yo can pay mote, but you can't get better. Aug 12, 2022
Be prepared to get great foundation rock.
Buying this by the pound get you about twice the rock that buying it by the piece delivers.
No fancy box, no bubble wrap; just great value.
Rock in the size range you want wrapped with heavy paper.
I asked for smaller pieces and my15 lbs = 5 medium pieces with no breakage. Super happy with this - don't pat for fancy packaging.
Perfect! Dec 23, 2021
Ordered 25# of foundation. Requested 4-5 largest possible. Received 4 BEAUTIFUL GIGANTIC foundation rocks. They were very carefully packaged and not even a fragment was broken off when they got here.
Can't wait to get started on my NSA aquascape for my new 210!
Packaged well Feb 20, 2021
No breakage with my order. Same as the other folks I came here to pay by the pound instead of per rock so I have some idea of what I'm getting. I'm happy with what I got!
Exactly what I ordered Jan 27, 2021
So I made the mistake of buying a $15 1lb foundation rock from a competitor that was completely useless in building an aquascape. I ordered 20 lbs of the rock and replied to the order confirmation with what I was looking for. I requested 2 large 10"+ pieces and the rest in smaller pieces. The smallest piece was bigger than what I got from their competitor and the two big pieces are massive. EXACTLY what I was looking for.
Marco Rock: Key Largo Premium Dry Rock | Cut Rock and Natural Shelf

In Today's video, we are taking a look at Marco Rocks: The Key Largo Premium Dry Rock Cut Rock and Natural Shelf.