How many pieces and shapes do you get?

I would say we got maybe 8-10 pieces/20lb box. They are a good size though. It is really neat stuff!

Can it be used in a fresh water aquarium?

Calcium rocks like sea shells in fresh water will leach out calcium and slowly dissolve. Will make you water turn to hard water over time. I would get plastic version if you like the reef rock style.

Does this need to be rinsed and soaked in R/O water before putting in tank?

It should be rinsed, the purpose of buying this rock is to *not* soak it. The coatings on it are meant to soak into the water in the tank to accelerate the adoption of new water to mature it quicker. I have built 3 aquariums with it, and it goes well, but I have had to black them out twice to kill off algae blooms. Bare rock is better if you intend to control all aspects of the maturity. This is a good product imho.

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CaribSea LifeRock Shapes - 20 lbs - Natural Aragonite Rock for Aquascaping, Supports Coral Growth & Tank Stability for Marine & Reef Tanks

Product ID: 57353805

Details

Brand
Carib Sea
Specific Uses For Product
Indoor
Material
Plastic
Compatible Material
Rock Coralline
Item Form
Pellet

🪨20 lbs natural aragonite rock

⏱️accelerates tank cycling time

⚙️porous structure for natural filtration

$580.46

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Description

🪸 Elevate your reef game with nature’s ultimate foundation!

ROCK YOUR REEF - Authentic aragonite textures create a stunning, natural aquascape that elevates your marine tank’s aesthetic.
BALANCE LIKE A PRO - Porous design supports biological filtration, maintaining crystal-clear water and a thriving ecosystem.
CHEMISTRY SAFE ZONE - pH-stable composition ensures your aquatic environment stays perfectly balanced and safe for all marine life.
FAST TRACK YOUR TANK - Infused with biological enhancers to slash cycling time, so your reef is ready to flourish faster.
DESIGN WITHOUT LIMITS - Shape reefs, caves, and ledges effortlessly—no adhesives needed—unlocking endless creative aquascaping possibilities.

CaribSea LifeRock Shapes are 20 lbs of natural aragonite rock designed specifically for marine and reef tanks. Featuring a porous structure that supports biological filtration and infused with agents to speed up tank cycling, LifeRock ensures a stable, pH-balanced environment that promotes coral growth and tank health. Perfect for custom aquascaping, it offers realistic textures and versatile shapes to create stunning underwater landscapes without adhesives.

Specifications

ASIN	B0773W3LXV
ASIN	B0773W3LXV
Age Range Description	All Life Stages
Best Sellers Rank	#46,644 in Pet Supplies ( See Top 100 in Pet Supplies ) #53 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	20 x 15 x 14 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

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