---
product_id: 51714137
title: "MARINA Longstone A/Stone 6 B/Pack"
brand: "marina"
price: "HK$91"
currency: HKD
in_stock: true
reviews_count: 13
category: "Marina"
url: https://www.desertcart.hk/products/51714137-marina-longstone-a-stone-6-b-pack
store_origin: HK
region: Hong Kong
---

# Enhances water circulation & surface agitation 6" length for broad air diffusion Safe for fresh & saltwater use MARINA Longstone A/Stone 6 B/Pack

**Brand:** marina
**Price:** HK$91
**Availability:** ✅ In Stock

## Summary

> 💧 Elevate your aquarium’s vibe—because your fish deserve the best bubbles in town!

## Quick Answers

- **What is this?** MARINA Longstone A/Stone 6 B/Pack by marina
- **How much does it cost?** HK$91 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/51714137-marina-longstone-a-stone-6-b-pack)

## Best For

- marina enthusiasts

## Why This Product

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

## Key Features

- • **Stress-Free Setup:** Simply connect to airline tubing and watch your aquarium come alive with bubbles.
- • **Aquascape with Purpose:** Not just functional—adds a dynamic decorative accent your fish will love.
- • **Seamless Airflow Distribution:** 6-inch airstone ensures even bubble flow, creating mesmerizing water movement.
- • **Dual Environment Compatibility:** Perfectly safe and effective in both freshwater and saltwater tanks.
- • **Breathe Life Into Your Aquarium:** Boost oxygen levels with superior surface agitation for thriving aquatic life.

## Overview

The MARINA Longstone A/Stone 6 B/Pack is a 6-inch aquarium airstone designed to increase surface agitation and accelerate oxygen replenishment. It effectively releases carbon dioxide build-up while aerating and circulating water, suitable for both fresh and saltwater tanks. Easy to install with airline tubing, it enhances aquatic environments with consistent bubble flow and decorative appeal.

## Description

Product Description The Marina airstone is ideal for adding accents in ay aquarium. The airstone diffuses air, creating water movement. Simply connect the airstone to your airline tubing and place it in the desired location. Box Contains Airstone

Review: Bubbles well - Good bubble flow
Review: Brilliant airstone - Absolutely great airstone, just make sure you have a pump that is strong enough to push the air through and that it is level in the tank otherwise bubbles will only appear on one end of the airstone. 5/5 for this product my fishes love playing in it and its a great price too! ☺️

## Features

- Increase surface agitation
- Accelerates oxygen replenishment
- Help release carbon dioxide build-up
- Air stone for aquarium use.
- Aerates, Circulates and Decorates
- Safe for Fresh and Salt Water applications. 6"

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0002AQHJG |
| Batteries Included | No |
| Batteries required | No |
| Best Sellers Rank | 45,609 in Pet Supplies ( See Top 100 in Pet Supplies ) 254 in Aquarium Air Pump Accessories |
| Colour | Blue |
| Customer Reviews | 4.2 4.2 out of 5 stars (418) |
| Date First Available | 23 April 2008 |
| Item Weight | 76.4 g |
| Item model number | A972 |
| Number of Items | 1 |
| Pet Type | Fish |
| Product Dimensions | 2.03 x 9.65 x 22.86 cm; 76.54 g |
| Quantity | 1 |
| Size | 15 cm |

## Product Details

- **Brand:** Marina
- **Colour:** Blue
- **Item weight:** 2.7 Ounces
- **Material:** Stone
- **Product dimensions:** 20L x 97W x 229H millimetres

## Images

![MARINA Longstone A/Stone 6 B/Pack - Image 1](https://m.media-amazon.com/images/I/71RUKfdeJ+L.jpg)

## Questions & Answers

**Q: What is the specificatios of the tubing that comes out of the stone?**
A: The tubing I used, was 6mm.
good luck 
Roger

**Q: How powerful does the pump need to be for this air stone? All the bubbles aren’t coming out of mine and I suspect it’s because the pump right. Thanks**
A: Did you set the stone in boiling water first?

What I did is put the stones in boiling hot water, and just left it overnight to help it become more porous. If you've already put them into your tank, I'd try boiling them for 10 mins or just leave it in hot water for couple hours

**Q: Do you have to poke holes in it for the air to go through?**
A: No it's porous so the air just passes through it.

**Q: Is it ok for koi pond**
A: It's rubbish, don't waste your money.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Bubbles well
*by A***R on 11 January 2026*

Good bubble flow

### ⭐⭐⭐⭐⭐ Brilliant airstone
*by R***L on 7 January 2022*

Absolutely great airstone, just make sure you have a pump that is strong enough to push the air through and that it is level in the tank otherwise bubbles will only appear on one end of the airstone. 5/5 for this product my fishes love playing in it and its a great price too! ☺️

### ⭐⭐⭐⭐ Ok after some time
*by D***Y on 3 January 2024*

Not a very even spread of bubbles and one of the stones was just gurgling to start with. I removed the stones and boiled them for twenty minutes and now they’re much better and I have a good even spread of fine bubbles

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*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-03-18*