---
product_id: 63598974
title: "Seachem Onyx Sand, 7 kg / 15.4 lbs"
brand: "seachem"
price: "R2750"
currency: ZAR
in_stock: true
category: "Misc."
url: https://www.desertcart.co.za/products/63598974-seachem-onyx-sand-7-kg-15-4-lbs
store_origin: ZA
region: South Africa
---

# Seachem Onyx Sand, 7 kg / 15.4 lbs

**Brand:** seachem
**Price:** R2750
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** Seachem Onyx Sand, 7 kg / 15.4 lbs by seachem
- **How much does it cost?** R2750 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/63598974-seachem-onyx-sand-7-kg-15-4-lbs)

## Best For

- seachem enthusiasts

## Why This Product

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

## Description

Seachem Onyx Sand, 7 kg / 15.4 lbs

## Features

- Fracted Porous Substrate For The Aquarium
- Specially Fracted Porous Substrate For The Aquarium; Suitable For Most Marine And Freshwater Environments Including Reef And Planted Aquariums
- Most effective when used alone as an integral substrate bed but may be mixed with other gravels or sands
- Not Chemically Coated Or Treated But Does Have A Slight Buffering Capacity

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Item Weight | 15.65 Pounds |
| Liquid Volume | 15.4 Liters |
| Allergen Information | Yam Free |
| Target Species | Freshwater Aquarium |
| Item Form | Sand |

## Product Details

- **Brand:** Seachem
- **Liquid Volume:** 15.4 Liters
- **Item Weight:** 15.65 Pounds
- **Item Form:** Sand
- **Manufacturer:** Seachem Laboratories, Inc.

## Images

![Seachem Onyx Sand, 7 kg / 15.4 lbs - Image 1](https://m.media-amazon.com/images/I/81HB+fgiEiL.jpg)

---

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**Shop now:** [https://www.desertcart.co.za/products/63598974-seachem-onyx-sand-7-kg-15-4-lbs](https://www.desertcart.co.za/products/63598974-seachem-onyx-sand-7-kg-15-4-lbs)

---

*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-04-25*