---
product_id: 1535345
title: "TetraFauna ReptoFilter Filter Cartridges, Size Medium, Filter Cartridge Refills, 3 Count"
brand: "tetra"
price: "A$20"
currency: AUD
in_stock: true
reviews_count: 13
category: "Tetra"
url: https://www.desertcart.com.au/products/1535345-tetrafauna-reptofilter-filter-cartridges-size-medium-filter-cartridge-refills-3
store_origin: AU
region: Australia
---

# Perfect fit for 20-gallon reptile tanks Efficient dual-sided filtration Disposable & easy replacement TetraFauna ReptoFilter Filter Cartridges, Size Medium, Filter Cartridge Refills, 3 Count

**Brand:** tetra
**Price:** A$20
**Availability:** ✅ In Stock

## Summary

> 🐢 Keep your reptile’s habitat fresh and flawless — because clean water is non-negotiable!

## Quick Answers

- **What is this?** TetraFauna ReptoFilter Filter Cartridges, Size Medium, Filter Cartridge Refills, 3 Count by tetra
- **How much does it cost?** A$20 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/1535345-tetrafauna-reptofilter-filter-cartridges-size-medium-filter-cartridge-refills-3)

## Best For

- tetra enthusiasts

## Why This Product

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

## Key Features

- • **Effortless Maintenance:** Fully assembled, disposable cartridges make replacements a breeze every 4 weeks.
- • **Whisper-Quiet Operation:** Innovative Whisper Technology keeps your space peaceful and odor-free.
- • **Trusted Legacy Since 1951:** Backed by decades of expertise, Tetra delivers reliable filtration for your exotic pets.
- • **Crystal Clear Water, Always:** Dual-sided mesh traps debris & waste for pristine terrarium water.
- • **Tailored for Reptile Enthusiasts:** Medium size fits TetraFauna ReptoFilter 20-gallon tanks and more, ensuring perfect compatibility.

## Overview

Tetra ReptoFilter Filter Cartridges feature dual-sided mesh for superior debris capture and odor removal, designed specifically for turtle, newt, and frog terrariums up to 20 gallons. These disposable, fully assembled cartridges with Whisper Technology ensure quiet, efficient filtration and easy replacement every four weeks, maintaining crystal-clear water and a healthy environment for your exotic pets.

## Description

Replacing cartridges is fast and easy. Rinse the cartridge under cold water to remove carbon dust, then remove the TetraFauna ReptoFilter lid and insert the cartridge into “V” slots and slide it all the way down into the filter. Replace when water begins to backflow over the top of the clogged cartridge. TetraFauna products are trusted by pet owners to meet the needs of their exotic animals. Since 1951, Tetra has developed the world’s most comprehensive body of fish food knowledge, and fishkeeping enthusiasts have looked to the brand for products and solutions that add ease and beauty to their home. Whether you're an experienced hobbyist or just starting out, Tetra has everything you need – from a large variety of quality fish food and innovative equipment to test kits and decor.

Review: Keeps water fresh - These filters work well to keep my turtle tank water clean and odorless. I have been using them for a couple of years and if changed regularly, water stays clear and fresh.
Review: Great Cartridges, Excellent Value! - These are the cartridges that are used in my waterfall filter that I have in my 20 gallon long turtle aquarium. I think they work very well!! The waterfall filter does require two cartridges though and I just recently got it so when I went to the pet store to get replacement cartridges and saw they were $13 for one box of 3 filters I knew I needed to find another buying option. I was thrilled to find these at under $3 a box! Even though there is a minimum order of 2 boxes I’m still way ahead! I bought 3 boxes for less than I’d have spent on just 1 box! So needless to say, the value is excellent! I also have been very happy with their performance. Turtles are very messy animals, even when they’re babies like mine. Her tank has never been even a little bit cloudy aside from the first 2 days after setting up the tank for the first time, but that had nothing to do with the filter, it was new tank syndrome and once the good bacteria developed it cleared right up and thanks to these filters (and cleaning of course) it’s staying that way. It was suggested to me to replace the filters every 3 weeks, but after a week and a half the cartridges are still working perfectly. At 3 weeks I’ll evaluate again. For turtles replacement will be more frequent, but if you have less messy animals or fish you probably won’t have to do it so often. So overall, I am extremely satisfied with my purchase and definitely recommend 💖

## Features

- EFFICIENT FILTRATION: Cleans and removes odors from water in turtle, newt and frog terrariums.
- DUAL-SIDED MESH: Catches debris and waste to keep water crystal clear.
- CONVENIENT: Disposable, fully assembled and ready to use.
- EASY TO REPLACE: Replacing cartridges is fast and easy – change every four weeks.
- SIZE: Medium size fits TetraFauna ReptoFilter 20 gallon, Viquarium and Decorative ReptoFilter.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000HHLKRI |
| ASIN  | B000HHLKRI |
| Age Range Description | All Life Stages |
| Best Sellers Rank | #2,406 in Pet Supplies ( See Top 100 in Pet Supplies ) #6 in Aquarium Filter Accessories |
| Brand Name | Tetra |
| Care Instructions | disposable |
| Color | Multi |
| Country of Origin | United States |
| Customer Reviews | 4.7 4.7 out of 5 stars (12,006) |
| Date First Available | October 15, 2006 |
| Date First Available  | October 15, 2006 |
| Department | Unisex-Adult |
| Department  | Unisex-Adult |
| Directions | See label |
| Included Components | Tetra ReptoFilter Cartridges - Medium 3 pack, green (25845) |
| Is Discontinued By Manufacturer  | No |
| Item Dimensions LxWxH | 3.5 x 3.5 x 6.52 inches |
| Item Package Dimensions L x W x H | 5.96 x 3.62 x 3.58 inches |
| Item Weight | 1.74 ounces |
| Item model number | 25845 |
| Item model number  | 25845 |
| Manufacturer | Tetra |
| Manufacturer  | Tetra |
| Material | Plastic |
| Model Name | Tetra ReptoFilter Cartridges - Medium 3 pack, green (25845) |
| Number of Items | 1 |
| Product Dimensions  | 3.5 x 3.5 x 6.52 inches; 1.74 ounces |
| Size | medium, 3-pack |
| Specific Uses for Product | Active |
| Style | Pet Supplies |
| Target Audience Keyword | dogs, fish |
| Warranty Description | Warranty |

## Images

![TetraFauna ReptoFilter Filter Cartridges, Size Medium, Filter Cartridge Refills, 3 Count - Image 1](https://m.media-amazon.com/images/I/81mJvxKkRGL.jpg)

## Questions & Answers

**Q: What size is best for a 40 gallon?**
A: Large, it will last a bit longer..

**Q: Do I need to buy something for this to go in ?**
A: Yes, you have to buy the filter and change them when they get thirty.

**Q: Can it be used in fish tank filter**
A: These are replacement filters for the Tetra ReptoFilter. I have not have the chance to use it in any other tank filters.

**Q: Can you use this in a fish aquarium?**
A: No , only if you wanna fill your aquarium a quarter of the way to full . This is for reptiles and such .

## Customer Reviews

### ⭐⭐⭐⭐⭐ Keeps water fresh
*by B***T on December 14, 2025*

These filters work well to keep my turtle tank water clean and odorless. I have been using them for a couple of years and if changed regularly, water stays clear and fresh.

### ⭐⭐⭐⭐⭐ Great Cartridges, Excellent Value!
*by K***R on August 5, 2020*

These are the cartridges that are used in my waterfall filter that I have in my 20 gallon long turtle aquarium. I think they work very well!! The waterfall filter does require two cartridges though and I just recently got it so when I went to the pet store to get replacement cartridges and saw they were $13 for one box of 3 filters I knew I needed to find another buying option. I was thrilled to find these at under $3 a box! Even though there is a minimum order of 2 boxes I’m still way ahead! I bought 3 boxes for less than I’d have spent on just 1 box! So needless to say, the value is excellent! I also have been very happy with their performance. Turtles are very messy animals, even when they’re babies like mine. Her tank has never been even a little bit cloudy aside from the first 2 days after setting up the tank for the first time, but that had nothing to do with the filter, it was new tank syndrome and once the good bacteria developed it cleared right up and thanks to these filters (and cleaning of course) it’s staying that way. It was suggested to me to replace the filters every 3 weeks, but after a week and a half the cartridges are still working perfectly. At 3 weeks I’ll evaluate again. For turtles replacement will be more frequent, but if you have less messy animals or fish you probably won’t have to do it so often. So overall, I am extremely satisfied with my purchase and definitely recommend 💖

### ⭐⭐⭐⭐⭐ Poor quality
*by M***A on January 14, 2026*

Not the same packaging as the old filters, nor is the quality good

## Frequently Bought Together

- TetraFauna ReptoFilter Filter Cartridges, Size Medium, Filter Cartridge Refills, 3 Count
- TetraFauna AquaSafe for Reptiles and Amphibians 3.38 Ounces, Aqua-Terrarium Water Conditioner, Makes Tap Water Safe
- TetraFauna ReptoGuard Turtle Health Conditioner 3 Count, Slow-Release (19514)

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**Shop now:** [https://www.desertcart.com.au/products/1535345-tetrafauna-reptofilter-filter-cartridges-size-medium-filter-cartridge-refills-3](https://www.desertcart.com.au/products/1535345-tetrafauna-reptofilter-filter-cartridges-size-medium-filter-cartridge-refills-3)

---

*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-03-02*