---
product_id: 29908746
title: "Carib Sea Arag-Alive Natural Reef Aquarium Gravel, 16 lbs."
brand: "carib sea"
price: "A$178"
currency: AUD
in_stock: true
reviews_count: 8
url: https://www.desertcart.com.au/products/29908746-carib-sea-arag-alive-natural-reef-aquarium-gravel-16-lbs
store_origin: AU
region: Australia
---

# Natural reef-like substrate texture Engineered bacteria for tank health Maintains stable pH 8.2 Carib Sea Arag-Alive Natural Reef Aquarium Gravel, 16 lbs.

**Brand:** carib sea
**Price:** A$178
**Availability:** ✅ In Stock

## Summary

> 🌊 Elevate your reef game with gravel that works as hard as you do!

## Quick Answers

- **What is this?** Carib Sea Arag-Alive Natural Reef Aquarium Gravel, 16 lbs. by carib sea
- **How much does it cost?** A$178 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/29908746-carib-sea-arag-alive-natural-reef-aquarium-gravel-16-lbs)

## Best For

- carib sea enthusiasts

## Why This Product

- Trusted carib sea brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **pH Perfect Balance:** Buffers aquarium water to maintain an ideal 8.2 pH without chemicals
- • **Natural Reef Aesthetic:** Varied grain sizes create an authentic coral reef look that impresses
- • **Algae Control Advantage:** Discourages nuisance algae growth, keeping your tank pristine
- • **Bio-Active Bacteria Boost:** Suppresses new tank syndrome for a thriving reef environment
- • **Durable & Low Maintenance:** Never needs replacement—invest once, enjoy years of vibrant marine life

## Overview

Carib Sea Arag-Alive Natural Reef Aquarium Gravel is a biologically complete substrate designed for saltwater tanks. It features specially engineered bacteria to prevent new tank syndrome, buffers water to maintain a stable pH of 8.2, and naturally discourages nuisance algae growth. Its varied grain sizes provide a natural reef appearance and support burrowing marine life, making it a durable, low-maintenance foundation for vibrant reef aquariums.

## Description

Biologically and mineralogically complete sand substrate for saltwater aquariums. Contains specially engineered bacteria to suppress ";new tank syndrome";. Discourages nuisance algae. Never needs replacement.

Review: Excellent for saltwater aquariums. - Great product with 2 years left before expiration. Did take a day or so for water to clear but that would be normal. Thanks!
Review: Quite Natural - Natural Reef - It's called Natural Reef and it is just that; a very natural looking reef substrate with a wide variety of grain sizes. It's awesome for your burrowing critters like Jawfish and Pistol Shrimp / Goby Pairs. I've used all of the popular Carisea reef tank substrates and this is my favorite for my higher flow SPS tank as it doesn't blow around too much and my pistol shrimp can make great burrows with the crushed coral pieces in the mix.

## Features

- Aids in the growth of corals
- Buffers for the life of the aquarium
- Helps maintain a proper pH of 8.2 without constant chemical additions
- Discourages nuisance algae growth

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00C5H0CI6 |
| ASIN  | B00C5H0CI6 |
| Best Sellers Rank | #182,064 in Pet Supplies ( See Top 100 in Pet Supplies ) #170 in Aquarium Sand |
| Brand Name | Carib Sea |
| Breed Recommendation | All Breed Sizes |
| Color | coral |
| Customer Reviews | 4.5 4.5 out of 5 stars (50) |
| Date First Available | April 2, 2013 |
| Date First Available  | April 2, 2013 |
| Department | Gravel & Substrates |
| Department  | Gravel & Substrates |
| Directions | Rinse the gravel in water before adding it to the aquarium. |
| Item Dimensions LxWxH | 2 x 13 x 20 inches |
| Item Package Dimensions L x W x H | 17.6 x 11.22 x 3.31 inches |
| Item Weight | 15.58 pounds |
| Manufacturer | CaribSea |
| Manufacturer  | CaribSea |
| Manufacturer recommended age  | 1 month and up |
| Number of Items | 1 |
| Product Dimensions  | 2 x 13 x 20 inches; 15.61 Pounds |
| Size | 16 LBS |
| Style | Classic |
| Target Audience Keyword | Fish |

## Product Details

- **Brand:** Carib Sea
- **Liquid Volume:** 16 Liters
- **Item Form:** Gravel
- **Target Species:** Macaw
- **Manufacturer:** CaribSea

## Images

![Carib Sea Arag-Alive Natural Reef Aquarium Gravel, 16 lbs. - Image 1](https://m.media-amazon.com/images/I/41Z+FRp0gCL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent for saltwater aquariums.
*by A***N on February 13, 2024*

Great product with 2 years left before expiration. Did take a day or so for water to clear but that would be normal. Thanks!

### ⭐⭐⭐⭐⭐ Quite Natural - Natural Reef
*by J***L on November 16, 2019*

It's called Natural Reef and it is just that; a very natural looking reef substrate with a wide variety of grain sizes. It's awesome for your burrowing critters like Jawfish and Pistol Shrimp / Goby Pairs. I've used all of the popular Carisea reef tank substrates and this is my favorite for my higher flow SPS tank as it doesn't blow around too much and my pistol shrimp can make great burrows with the crushed coral pieces in the mix.

### ⭐⭐⭐⭐⭐ Excellent product
*by A***R on July 11, 2021*

As described, will buy again

## Frequently Bought Together

- Carib Sea Arag-Alive Natural Reef Aquarium Gravel 16 lbs.
- CaribSea Arag-Alive 20 lb Fiji Pink Sand
- Instant Ocean Sea Salt 50 Gallons, For Marine Aquariums, Fast Dissolving

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-01-27*