---
product_id: 24949588
title: "Replacement Sponge for Hydro II"
brand: "aquarium technology, inc."
price: "₨5313"
currency: LKR
in_stock: true
reviews_count: 8
url: https://www.desertcart.lk/products/24949588-replacement-sponge-for-hydro-ii
store_origin: LK
region: Sri Lanka
---

# 20 Gallon Capacity Easy to Clean Oxygen Boosting Replacement Sponge for Hydro II

**Brand:** aquarium technology, inc.
**Price:** ₨5313
**Availability:** ✅ In Stock

## Summary

> 🌊 Dive into Cleaner Waters with Hydro II!

## Quick Answers

- **What is this?** Replacement Sponge for Hydro II by aquarium technology, inc.
- **How much does it cost?** ₨5313 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/24949588-replacement-sponge-for-hydro-ii)

## Best For

- aquarium technology, inc. enthusiasts

## Why This Product

- Trusted aquarium technology, inc. brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Enhanced Oxygenation:** Soft foam design maximizes surface area for optimal bubble creation.
- • **Effortless Maintenance:** Simply rinse and squeeze in used tank water for hassle-free cleaning.
- • **Revitalize Your Aquarium:** Keep your aquatic ecosystem thriving with our Hydro II replacement sponge!
- • **Protein Buildup Reduction:** Say goodbye to unsightly protein buildup with our innovative filtration.
- • **Sustainable Bacteria Support:** Maintain essential nitrogen-fixing bacteria for a balanced tank environment.

## Overview

The Replacement Sponge for Hydro II is designed for the Hydro-Sponge II Filter, accommodating tanks up to 20 gallons. It features an easy-to-clean design that supports beneficial bacteria while enhancing oxygen levels and reducing protein buildup.

## Description

Replacement Sponge for Hydro II

## Features

- This is a replacement sponge for the “Hydro-Sponge II Filter – Up to 20 Gallons”
- Easy to clean - simply rinse and squeeze in used tank water (not tap water!) to maintain nitrogen-fixing bacteria.
- Soft foam filters across a wide surface area, creating bubbles to reduce protein buildup and increase oxygen.

## Images

![Replacement Sponge for Hydro II - Image 1](https://m.media-amazon.com/images/I/512fsY+dMrL.jpg)

## Available Options

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

## Questions & Answers

**Q: What is the diameter of the sponge and the diameter of the hole?**
A: Hole is 1 inch.
Diameter of sponge is 4 1/2 inches
Height is 4 1/2 inches

**Q: Is this sponge for the 2 or 3 ? The measurements in descriptions says 4 but the answer to people’s question says 3 by the measurements they say it**
A: 4 and 5 have the same base. Only difference is 5 is a fatter (thicker) sponge than 4. 
Hope that helped a little.

**Q: how tall is the sponge?**
A: 4.5inches

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Way better Than Reticulated Foam
  

*by J***J on Reviewed in the United States on December 23, 2022*

I had used the ATI Hydro-Sponge with the reticulated foam and was disappointed. Just didn't do a good job of mechanical filtering and left the water slightly hazy/cloudy. Replace it with this fine foam and fixed the problem.Note this is not one of the Asian knock-off foam filters, but the original API foam, which is superior.

### ⭐⭐⭐⭐ 4.0 out of 5 stars







  
  
    Very fine sponge/media
  

*by P***B on Reviewed in the United States on November 11, 2021*

For a HOB intake filter it's too fine of a media to not clog in a very short timeframe. It would be much better use for a bubble/in-tank filter.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Love this Hydro!!! On my 4th Replacement Filter
  

*by M***Y on Reviewed in the United States on February 20, 2013*

I love this Filter, it's quiet, looks ok, fits nicely in the tank, is really sturdy, and really does it's job. I wanted to test it so I took it out and let my tank get pretty dirty, I put a new sponge on and stuck it in there with no attempt at cleaning it first and within hours you could see a difference. I just purchased my 3rd and 4th sponge, which last a long time and only have to clean the filter maybe 1 time a month, if that. I have a Turtle in the tank with minimal fish.

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**Shop now:** [https://www.desertcart.lk/products/24949588-replacement-sponge-for-hydro-ii](https://www.desertcart.lk/products/24949588-replacement-sponge-for-hydro-ii)

---

*Product available on Desertcart Sri Lanka*
*Store origin: LK*
*Last updated: 2026-03-05*