CaribSea Arag-Alive! Special Grade Reef Aquarium Sand, 20-lb bag

By CaribSea
Rated 3.25 out of 5 stars
$24.39 (-16%)Chewy Price
$28.99Chewy Price
In Stock
FREE 1-3 day delivery on first-time orders over $25

About This Item


  • Contains millions of live bacteria to help aquarium water cycle fast, clear quickly and provide a natural biological balance.
  • Made with real aragonite sand for an authentic marine environment.
  • Simply open this sand and add it to your aquarium—no rinsing required!
  • “Good til Date” helps ensure you’re using fresh, high quality sand.
  • Natural substrate helps create and maintain ideal water conditions for your exotic fish and reefs.

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Frequently Bought Together

CaribSea LifeRock Nano Arch Aquarium Rock, 1 count
Rated 4.3636 out of 5 stars
$24.99Chewy Price
Total Price: $74.37

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Questions & Answers

2 Customer Questions

What’s size of grain sand ?
Answer by ChewyJan 05, 2022
This sand measures between 1.0 – 2.0mm with a density of 85 pounds per cubic foot.

Is this for saltwater or fresh water tanks?
Answer by ChewySep 08, 2021
This sand is made for and usually used in marine aquariums.

ReviewsWrite a Review

Rated 3.25 out of 5 stars
4 Ratings
Would recommend to a friend

4 Customer Reviews

Rated 5 out of 5 stars
By Blowinreefer on Apr 27, 2023

Don't listen to other reviews without trying

Cycled tank instantly, had a nasty algae outbreak until added. Its cloudy at first and add it a lil at a time with livestock otherwise rinse it Seriously I'm buying more now

Rated 2 out of 5 stars
By jaime on Jan 30, 2023

Not ideal for freshwater

This says it's for freshwater, doesn't even say for both fresh and saltwater. The water looked like a big dust cloud. Everyone is telling me it's for saltwater and that's what my problem is. I did research and it can be used for freshwater but ideally for saltwater, anyway ... My tank still looks like a dust cloud anytime the same gets moved around It's been a week and a half and I've used the water clarifier and it still looks gross. I feel like I need to just start over without the sand and it sucks because I was doing a fishless cycle and almost complete

Rated 5 out of 5 stars
By Landon1 on Dec 5, 2022

5 Stars. Great product.

This live reef sand arrived on my doorstep today. I was concerned, since the box was beat up pretty bad, but what can you expect with 60ish of sand in a thin cardboard box? Opened the box and the bags are in perfect shape. No rips, tears or leaks. Exact product I ordered. Would recommend.

Rated 1 out of 5 stars
By Dott on Jul 10, 2022

completely worthless

This was supposed to be live reef sand with water and bacteria in bags, I received 3 20lb bags of dried up reef sand, completely worthless