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🪸 Elevate your reef game with LifeRock — where science meets stunning aquascapes.
CaribSea LifeRock Shapes is a 20-pound natural aragonite rock designed for marine and reef tanks. Its porous structure enhances biological filtration and supports coral growth while maintaining stable pH levels. Infused with biological enhancers, it accelerates tank cycling, enabling faster establishment of a balanced aquatic environment. Ideal for custom aquascaping, it allows reef-building without adhesives, making it a must-have for serious marine aquarium enthusiasts.






| ASIN | B0773W3LXV |
| ASIN | B0773W3LXV |
| Age Range Description | All Life Stages |
| Best Sellers Rank | #35,427 in Pet Supplies ( See Top 100 in Pet Supplies ) #41 in Aquarium Décor Rocks |
| Brand Name | Carib Sea |
| Color | No Color |
| Customer Reviews | 4.0 4.0 out of 5 stars (266) |
| Date First Available | November 2, 2017 |
| Date First Available | November 2, 2017 |
| Department | Unisex-Adult |
| Department | Unisex-Adult |
| Directions | Ready to use as packaged. No rinsing necessary. |
| Included Components | …… |
| Is Discontinued By Manufacturer | No |
| Item Dimensions LxWxH | 3.25 x 5.75 x 7.5 inches |
| Item Package Dimensions L x W x H | 21.35 x 16.98 x 12.73 inches |
| Item Weight | 24.6 Pounds |
| Item model number | 00381 |
| Item model number | 00381 |
| Manufacturer | CARIBSEA INC |
| Manufacturer | CARIBSEA INC |
| Manufacturer recommended age | 1 month and up |
| Material | Plastic |
| Model Name | ….. |
| Number of Items | 1 |
| Product Dimensions | 3.25 x 5.75 x 7.5 inches; 24.6 Pounds |
| Size | 20lb (Pack of 1) |
| Specific Uses for Product | Indoor |
| Style | Caribsea |
| Target Audience Keyword | fish |
| Warranty Description | Warranty |
M**Y
Awesome Life Rock!
I got several beautiful arches and one big cave. They were packed extremely well, but one arch was broken. However that's not the fault of the company, I saw my mail person slamming the box on the ground (it is heavy). I was able to glue it back together and my reef looks amazing!
C**O
Amazing product
I am very happy with this product. The arches are nice provides a ton of coral, anemone, and fish spots. One small broken piece, I honestly kinda wish there were a few more broken pieces for the filtration! lol all in all money very well spent and if I set up another tank, 100% using caribsea again!
L**S
Awesome product!
Love the product! It was packaged very well. Only had one small piece break off, which was not a big deal, all the other pieces where intact. I put the white spot where the piece broke off towards the back and placed the smaller piece on the sand bed. There were 4 pieces, all were gorgeous and much larger than I anticipated which worked out great in my 110 gallon tank. The coloring was perfect as well, blended in beautifully with my existing rock. Would definitely purchase again and recommend to anyone looking for rock for their tank.
J**F
Would not recommend!
Package included 4 pieces unfortunately 3 out of the 4 arrived broken. These are man made and should be designed/built thicker to withstand shipping. Too many weak points! Color is also not full in all areas which can be a real eye sore if not placed accordingly. Would not recommend this product but if you do make sure to order Hold Fast epoxy because your gonna need it
A**C
Broken
Bought a box (unopened, straight from Carib sea) from my LFS and it was perfect, though not enough. I was “trying it out” to see how shapes looked. I was super impressed so I ordered a box from my main go-to, Amazon. Every piece was broken. In anticipation of this from reading other reviews, I ordered some kind of putty stuff to help hold things together, but that is still undetermined how well that worked. Good product, but best to get from someplace local that won’t seem to be elbow dropped and jump kicked.
D**.
Great looking However arrived broken.
Great looking dry rock but arches were all broken when it arrived. The package looked fine when I received it but upon opening the box I noticed the two major arches were broken into multiple pieces. disappointing to get something broken. Takes a long time to cycle in tank as it's not very porous so don't expect it to be plug and play. Will eventually lose some of its color. Probably would buy again and add some epoxy to the order to repair the broken pieces.
B**G
Came packed immaculately.
As the reviews say, many other people received broken or damaged rock. These pieces were wrapped with tissue paper individually and cardboard wrapping paper. Also packed with some cardboard tissue paper. For the price these are some beautiful pieces and I look forward to using them. These were very large in size and varied in color and shape. For $120 you can’t beat it, around $6 a pound that you would probably pay for some used old rock! Description says you will receive 20lbs of rock or more. I received almost 30lbs!!!
S**E
Beautiful rocks
I never write a review but felt I needed to for these after reading the reviews of people receiving broken rocks. I bought the 20 lb box and received 2 arches, 1 tunnel and 1 cave. None were broken, huge pieces...I feel like I got more than I paid for. The shipping was superb!! Every rock was wrapped in both tissue and an absorbancy packaging that was wound around it at least 5 times. Plus a TON of packing paper around that. I will definitely buy again from this seller when I upgrade my tank. It's always a gamble buying this stuff online but this was definitely a win!
A**R
Delivery was really fast taking into account we are in a pandemic and it’s Christmas time. I live in Scotland and it arrived from England in 2days! The shapes look brilliant, I’m going to spend ages trying to aquascape as I have so many options! I’m really happy and would highly recommend
Trustpilot
1 month ago
2 weeks ago