---
product_id: 191539163
title: "Oolitic Aragonite 10lb Aquarium Sand for Reef, Saltwater and Marine Tanks and Aquariums"
brand: "aqua natural"
price: "689 Lei"
currency: RON
in_stock: true
reviews_count: 8
category: "Aqua Natural"
url: https://www.desertcart.ro/products/191539163-oolitic-aragonite-10lb-aquarium-sand-for-reef-saltwater-and-marine
store_origin: RO
region: Romania
---

# 99% pure calcium carbonate 8.2 stable pH buffering Sustainably sourced Bahamian aragonite Oolitic Aragonite 10lb Aquarium Sand for Reef, Saltwater and Marine Tanks and Aquariums

**Brand:** aqua natural
**Price:** 689 Lei
**Availability:** ✅ In Stock

## Summary

> 🌊 Elevate your reef tank with the pure power of Bahamian aragonite!

## Quick Answers

- **What is this?** Oolitic Aragonite 10lb Aquarium Sand for Reef, Saltwater and Marine Tanks and Aquariums by aqua natural
- **How much does it cost?** 689 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/191539163-oolitic-aragonite-10lb-aquarium-sand-for-reef-saltwater-and-marine)

## Best For

- aqua natural enthusiasts

## Why This Product

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

## Key Features

- • **Eco-Conscious Sourcing:** Exclusively harvested under Bahamian government lease, guaranteeing sustainable and renewable supply.
- • **Optimized Surface Area:** Over 1 million sq. cm per kg for superior bacterial colonization that naturally reduces toxins.
- • **Unmatched pH Stability:** Maintains a natural 8.2 pH balance without chemical additives, ensuring a thriving marine environment.
- • **Premium Purity & Quality:** 99% pure calcium carbonate sand with zero impurities for crystal-clear, healthy aquarium water.
- • **Natural Flocculant Action:** Calcium carbonate promotes filtration efficiency by clumping particles, clearing water faster.

## Overview

Aqua Natural Oolitic Aragonite is a premium 10lb aquarium sand designed for reef, saltwater, and marine tanks. Harvested sustainably from The Bahamas, it offers unmatched pH buffering at 8.2, 99% pure calcium carbonate composition, and a massive surface area for beneficial bacteria growth. Its natural flocculant properties enhance filtration, ensuring crystal-clear water while supporting a healthy aquatic ecosystem.

## Description

Bahamian Aragonite Aquarium Sand is the ideal substrate for marine, reef or African Cichlid aquariums. It is a pure Oolitic Aragonite sand collected from the crystal clear oceans of The Bahamas, with no harmful tar, organics or impurities. This aquarium sand has unsurpassed buffering capability and helps maintain a natural pH balance of 8.2 without the constant addition of chemicals. One kg of Oolitic Aragonite Aquarium Sand offers over 1 million sq. cm of surface area providing a huge space for housing ammonia, nitrate and nitrite reducing bacteria. This substrate is a fine sand comprised of calcium carbonate (aka aragonite). Calcium carbonate is a naturally occurring salt water component and can make water cloudy when disturbed. Calcium Carbonate also acts like a flocculant. Flocculants will help your filtration capture more particles, leaving you with crystal clear water as the cloudiness is filtered out. Also, any cloudiness is not harmful for fish and will resolve within a few hours/days of filtration. Over rinsing of this substrate is not recommended due to the chemical composition of aragonite. Oolitic Aragonite Sand is the ideal grain size for reef tanks, fish tanks, plenum systems and refugiums, but is not recommended for high flow aquariums that are SPS dominate.

Review: Good value for money - Used in my nano 5g tanks. Good ocean quality. Fogs up the tank in the beginning but filter takes care of it shortly. Good value for money nice natural look. Overall I would give it 4.5/5 only downside is algae accumulates on it every week.
Review: No cloudy water - It a sugar white sand. It doesn't have crystalline glint of quartz or silica sand. Every particle is rounded over. The grain size is under 0.5 to 0.8mm. It's a very fine sand. I just dump a few fistful into my aquarium, and no cloud of dust. Just a hint of haze that goes away in 30 minutes. Just as I expected because my tank has a lot of bio filtration media, and the bacteria in the media filter out the very fine dust quickly. I suspect other reviewers may have little to no matured bio filtration, thus resulting in cloudy water. I mainly added this sand to add a little KH and GH to my tank because my water is soft, and bio filtration can lower pH if carbonate is not added. I think it will work.

## Features

- Unsurpassed buffering capability - keeps pH at a stable 8.2
- 98% pure calcium carbonate - no impurities like other sands
- Naturally renewable oolitic aragonite from a sustainable source
- Pisces is the only company that has a lease with The Bahamian government to harvest aragonite
- Intended for use with saltwater/marine aquariums.
- Calcium Carbonate is a flocculant. Cloudiness is expected and will be removed via filtration resulting in dramatically clear water.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Customer Reviews | 4.5 out of 5 stars 706 Reviews |

## Images

![Oolitic Aragonite 10lb Aquarium Sand for Reef, Saltwater and Marine Tanks and Aquariums - Image 1](https://m.media-amazon.com/images/I/81gVbuwBvzL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: Can you use it in a fresh water tank?**
A: Yes, it instructs to rinse it first which would be wise. I didn't follow that step and had a very cloudy tank for the first week while it cycled.

**Q: I got diamong goby,will this sand avoid cloudiness with diamong gpby ?**
A: I have not tried it yet but the review says the sand clears up soon

**Q: I was going to add crushed coral to my 5 gallon tank for my nerite snails. will coarse aragonite be the same?**
A: This is a fine sand that's actually coral that's super crushed.  It adds to snail shell hardness.  I have a few Nerite and Apple Snails happily living with it, and it cleared up all of the old "soft water" shell weakness.

**Q: Is this enough sand for a 5 gal tank?**
A: That depends how thick you like your substrate. Personally I do not go higher than 1", and i have a 1200 gal and a 650 gal. I used this sand in my sand filters (2). But for 5 gallons this should be plenty.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good value for money
*by P***A on November 28, 2025*

Used in my nano 5g tanks. Good ocean quality. Fogs up the tank in the beginning but filter takes care of it shortly. Good value for money nice natural look. Overall I would give it 4.5/5 only downside is algae accumulates on it every week.

### ⭐⭐⭐⭐⭐ No cloudy water
*by Y***. on November 2, 2025*

It a sugar white sand. It doesn't have crystalline glint of quartz or silica sand. Every particle is rounded over. The grain size is under 0.5 to 0.8mm. It's a very fine sand. I just dump a few fistful into my aquarium, and no cloud of dust. Just a hint of haze that goes away in 30 minutes. Just as I expected because my tank has a lot of bio filtration media, and the bacteria in the media filter out the very fine dust quickly. I suspect other reviewers may have little to no matured bio filtration, thus resulting in cloudy water. I mainly added this sand to add a little KH and GH to my tank because my water is soft, and bio filtration can lower pH if carbonate is not added. I think it will work.

### ⭐⭐⭐⭐⭐ it looked amazing, needs extra rising before use.
*by T***D on December 12, 2025*

it was a bit dusty , so take care in rinsing thus sand. the final product looked great in my aquarium. careful with flow, this fine sand will pile up where flow is too high.

## Frequently Bought Together

- Aqua Natural Oolitic Aragonite 10lb Aquarium Sand for Reef, Saltwater and Marine Tanks and Aquariums
- Instant Ocean Sea Salt (50 gal)_MB

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*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-02-17*