---
product_id: 17512386
title: "Cascade 20"
brand: "penn-plax"
price: "E£ 910"
currency: EGP
in_stock: null
reviews_count: 8
url: https://www.desertcart.com.eg/products/17512386-cascade-20
store_origin: EG
region: Egypt
---

# 20 GPH flow rate Ultra-quiet operation Adjustable flow control Cascade 20

**Brand:** penn-plax
**Price:** E£ 910
**Availability:** ❌ Out of Stock

## Summary

> 💧 Small Filter, Big Impact – Keep Your Aquarium Crystal Clear and Your Fish Happy!

## Quick Answers

- **What is this?** Cascade 20 by penn-plax
- **How much does it cost?** E£ 910 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.com.eg](https://www.desertcart.com.eg/products/17512386-cascade-20)

## Best For

- penn-plax enthusiasts

## Why This Product

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

## Key Features

- • **Compact Yet Mighty:** Mini hang-on design fits seamlessly on small tanks without sacrificing performance or style.
- • **Quad Filtration Power:** Double-sided media cartridges trap debris, remove toxins, and banish odors for healthier water.
- • **Effortless Maintenance:** Disposable cartridges make monthly filter changes quick, keeping your aquarium sparkling with zero hassle.
- • **Crystal Clear Water, Always:** Quietly powers up to 7-gallon tanks with 20 GPH flow for pristine aquatic environments.
- • **Tailored Flow for Every Moment:** Adjust the water flow effortlessly to suit feeding times or delicate aquatic life needs.

## Overview

The Cascade 20 Power Filter is a compact, quiet hang-on filter designed for freshwater and saltwater aquariums up to 7 gallons. Delivering 20 gallons per hour, it features an adjustable flow knob and a lift tube extension for versatile installation. Its disposable double-sided media cartridges provide quad filtration—removing particulates, chemicals, discoloration, and odors—ensuring crystal clear water with minimal maintenance.

## Description

Penn-Plax presents the Cascade 20 Mini Power Hang-On Filter. This filter quietly delivers crystal clear water, and pushes water at 20 Gallons per Hour (GPH) for tanks up to 7 Gallons in size. It’s great for Freshwater and Saltwater aquariums. Accommodating: The adjustable flow knob allows for increased or decreased water flow at will, which is extremely helpful during feeding times, or use it as needed. The hang-on design is constructed for safe mounting. With a provided extension piece, the lift tube measures between 5” (min) and 6 1/2” (max). Extremely Beneficial: This Cascade filter utilizes disposable, double-sided media cartridges that contain Poly Fiber Floss. The included cartridge traps floating particulate matter, removes harmful chemicals and toxins, clears up discolorations, and reduces foul odors from your aquarium’s water. Overall Measurements: 4. 5” (H) x 3. 75” (W) x 3” (D). Shop Penn-Plax for All Your Pet’s Needs: Penn-Plax is a manufacturer and distributor of top quality pet supplies, who specialize in creating excellent pet products for animals, both great and small.Pour enough water to completely immerse impeller cover before turning filter on. Never run filter dry.

Review: Happy Customer, and Happy Gouramis! - After researching a number of different filters for my 20-gallon gourami tank, I decided to give this one a try. It is designed with function in mind, including an adequate system of bio-filtration and flow control. Flow control, though simple in design, is a nice feature to have that is sadly lacking on many HOB filters. This feature was important to me as gouramis are labyrinth fish who prefer slow-moving water, and I wanted the ability to adjust the flow, if necessary. One reason I hesitated to invest in this filter is that, although the filter itself is very reasonably priced, the replacement filter cartridges are somewhat expensive. Fortunately, the size of the intake tube is just right to use one of these pre-filters: Pre-Filter Sponge 3 Pack for Fluval Edge Aquarium This increases the biological filtration even more while filtering small particles before they ever enter the filter itself. I simply rinse the pre-filter in aquarium water ever two weeks or so and replace the filter cartridge once a month, since activated carbon expires monthly. Rinsing the pre-filter is an easy step, since this has an extendable intake tube, making it easy to detach the endpiece from the filter itself without having to actually pull the sponge off the intake every time. The filter even continues to run while I do this, as long as the end of the intake is submersed. As an added bonus, my flower shrimp loves to eat the particles of food that collect on the sponge, and as a filter feeder, she enjoys the luxury of hanging on the intake to make use of the flow without the danger of being harmed by the filter intake. Meanwhile, between some tinkering with the flow control and the addition of the sponge, the flow itself is weak enough to not upset my male/female pair of gouramis, who are able to blow bubble nests and engage in spawning behavior. Even though this is only a 20-gallon tank, the flower shrimp, clown pleco and mystery snails have their own space, and the gouramis have theirs. Having a sponge pre-filter and flow control also benefits the live plants in my tank, especially the java fern, which proliferates easily and abundantly, but often can be damaged by filter intakes when the young ferns float about the tank before finding a piece of driftwood or other material where they can grow. In terms of reliability, I have run this filter steadily for four months as of the writing of this review, and, used in conjunction with some additional sponge filters, this has proven itself to be reliable. It is self-priming and consistently restarts automatically following a power outage. It even runs steadily during a partial water change, and the 'Bio-Falls' system seems to provide additional aeration for the water, which is important not only for providing oxygen for my water-breathing creatures, but helps remove toxic substances, which benefits all of the creatures in my tank, including the air-breathing gouramis. To conclude, I will provide a brief list of pros and cons: PROS: 1. It is inexpensive 2. It is effective in terms of mechanical, chemical, and biological filtration 3. It is reliable and self-priming 4. It fits the inexpensive Fluval sponge pre-filters 5. It has flow control CONS: 1. Replacement cartridges are not easily found in stores 2. Replacement cartridges are expensive (but this can be easily addressed by using an inexpensive sponge pre-filter, extending the cartridge life to at least a full month)
Review: Penn Plax Cascade Hang-on Aquarium Filter Review - The story of my review may be like a few others . I ordered the first Penn Plax Cascade Aquarium and it arrived on time and by appearance not damaged. Putting it together was easy. I put it in my 20gal fish tank. I plugged it in and the motor and impeller started up and it started to work just fine. I then checked on it about an hour later and the motor was humming and the impeller had stopped. I took it out and checked the directions and all was correct. I put in back into the tank and it ran for about a minute and then the impeller stopped working. I tried to hand turn the impeller by hand but it would not work. While the unit worked initially it seemed to be doing a good job and the motor was very quiet. So I put in a return request. I received a response within a few hours. I returned the unit and within 3 days my replacement came. I put it together and plugged it in and tested it in my sink. It worked just fine. I then put it into the tank. Again it worked fine. I checked on it in an hour and it was working perfectly. I have now had it 2 weeks and I love it. No problems, motor quit and it does a good job to keep the water clean. I like the option of being able to adjust the water flow. I would highly recommend this product. My only advice is that after you put it together test it first before putting it into your fish tank. I was impressed with desertcart's return policy. I have been buying from desertcart for more then 6 years and purchased almost 80 items, this was only the 2nd time I had to return an item. I gave it 5 stars because not matter what the item is or where you purchased it you will get lemon from time to time. In the end the new returned item worked great.

## Features

- QUIET & EFFICIENT: The Cascade 20 Mini Power Hang-On Filter quietly delivers crystal clear water throughout the aquarium. This filter is used for tanks up to 7 Gallons in size. The filter pushes water at 20 gallons per hour(GPH), It’s great for Freshwater and Saltwater aquariums.
- ACCOMMODATING: The adjustable flow knob allows for increased or decreased water flow at will, which is extremely helpful during feeding times, or use it as needed. The hang-on design is constructed for safe mounting. With a provided extension piece, the lift tube measures between 5” (min) and 6 1/2” (max).
- EXTREMELY BENEFICIAL: This Cascade filter utilizes disposable, double-sided media cartridges that contain Poly Fiber Floss. The included cartridge traps floating particulate matter, removes harmful chemicals and toxins, clears up discolorations, and reduces foul odors from your aquarium’s water. It is recommended to change these disposable filters once a month.
- Pour enough water to completely immerse impeller cover before turning filter on. Never run filter dry.
- OVERALL MEASUREMENTS: 4. 5” (H) x 3. 75” (W) x 3” (D)
- SHOP PENN-PLAX FOR ALL YOUR PET’S NEEDS: Penn-Plax is a manufacturer and distributor of top quality pet supplies, who specialize in creating excellent pet products for animals, both great and small.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00T6HPZFI |
| ASIN  | B00T6HPZFI |
| Age Range Description | All Life Stages |
| Best Sellers Rank | #31,061 in Pet Supplies ( See Top 100 in Pet Supplies ) #126 in Aquarium Filters |
| Brand Name | Penn-Plax |
| Color | black & Blue |
| Customer Reviews | 4.1 4.1 out of 5 stars (6,498) |
| Date First Available | June 22, 2015 |
| Date First Available  | June 22, 2015 |
| Directions | Follow included instructions |
| Included Components | Aquarium Filter |
| Is Discontinued By Manufacturer  | No |
| Item Dimensions LxWxH | 3.5 x 5.2 x 4.8 inches |
| Item Package Dimensions L x W x H | 5.28 x 5 x 3.74 inches |
| Item Weight | 0.7 Pounds |
| Item model number | CPF6 |
| Item model number  | CPF6 |
| Manufacturer | Penn Plax, INC. |
| Manufacturer  | Penn Plax, INC. |
| Model Name | CPF6 |
| Number of Items | 1 |
| Product Dimensions  | 3.5 x 5.2 x 4.8 inches; 11.2 ounces |
| Size | Cascade 20 |
| Specific Uses for Product | Indoor |
| Target Audience Keyword | fish |
| Warranty Description | Full Amazon Warranty |

## Images

![Cascade 20 - Image 1](https://m.media-amazon.com/images/I/81sBoa9EWyL.jpg)
![Cascade 20 - Image 2](https://m.media-amazon.com/images/I/71Yvti43VsL.jpg)
![Cascade 20 - Image 3](https://m.media-amazon.com/images/I/716P2bSfgiL.jpg)
![Cascade 20 - Image 4](https://m.media-amazon.com/images/I/81r-T9FJ9nL.jpg)
![Cascade 20 - Image 5](https://m.media-amazon.com/images/I/81rh4sUepLL.jpg)

## Available Options

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

## Questions & Answers

**Q: Does it come with a pre-filter? Also do the tetra whisper small cartridges fit?**
A: It does not come with a pre-filter, but the fluval edge pre-filter fits pretty well. You just have to use some hot glue and glue it to the intake tube. As for the tetra cartridges, im not sure. I've been using some extra API crystal bio-chem zorb cartridges I have, which don't fit perfectly, but they work.

**Q: What size should I get for my 3 gallon tank? Is this safe for a Berra fish?**
A: In my opinion, this filter assembly Penn Plax Cascade 20 mini should do the job for up to a 7 gallon tank. This filter assy. has a flow control knob you can adjust the flow of filtration from slow to fast for fine adjustment of flow or for feeding time to shut off filtration while feeding so as not to filter the food out of water. This is a nice feature as you do not need to unplug the filter assy., while feeding, it bypasses a small amount of water and does not harm the pump. I really like the Cascade filters, I have two 300's on my 55 gallon tank.  I believe your other question is it safe for a betta fish not Berra? When I started out with a one and a half gallon tank and one Betta, I asked at a fish store on Betta care and the store told me they don't need filtration or aeration and they only live a couple years if you are lucky. I didn't buy this info. because I put myself if a fish position not wanting to breathe and swim in my own waste. I used filtration, aeration and a small heater to keep a constant on temperature for the lil guy and it lived for five years!  So I'd say the filter would be safe. Some say I do overkill, but I enjoy happy, healthy fish! I also use BettaSafe water conditioner to start off with also. I hope this helps you!

**Q: Does the carbon side of the filter face the tank?**
A: Yes.  The flow of water should hit the white filter media first, then pass through the carbon, and out into the tank.

**Q: can i use activated carbon and ceramic for the filter media?**
A: No room for ceramic and carbon

## Customer Reviews

### ⭐⭐⭐⭐⭐ Happy Customer, and Happy Gouramis!
*by J***Y on March 23, 2012*

After researching a number of different filters for my 20-gallon gourami tank, I decided to give this one a try. It is designed with function in mind, including an adequate system of bio-filtration and flow control. Flow control, though simple in design, is a nice feature to have that is sadly lacking on many HOB filters. This feature was important to me as gouramis are labyrinth fish who prefer slow-moving water, and I wanted the ability to adjust the flow, if necessary. One reason I hesitated to invest in this filter is that, although the filter itself is very reasonably priced, the replacement filter cartridges are somewhat expensive. Fortunately, the size of the intake tube is just right to use one of these pre-filters: Pre-Filter Sponge 3 Pack for Fluval Edge Aquarium This increases the biological filtration even more while filtering small particles before they ever enter the filter itself. I simply rinse the pre-filter in aquarium water ever two weeks or so and replace the filter cartridge once a month, since activated carbon expires monthly. Rinsing the pre-filter is an easy step, since this has an extendable intake tube, making it easy to detach the endpiece from the filter itself without having to actually pull the sponge off the intake every time. The filter even continues to run while I do this, as long as the end of the intake is submersed. As an added bonus, my flower shrimp loves to eat the particles of food that collect on the sponge, and as a filter feeder, she enjoys the luxury of hanging on the intake to make use of the flow without the danger of being harmed by the filter intake. Meanwhile, between some tinkering with the flow control and the addition of the sponge, the flow itself is weak enough to not upset my male/female pair of gouramis, who are able to blow bubble nests and engage in spawning behavior. Even though this is only a 20-gallon tank, the flower shrimp, clown pleco and mystery snails have their own space, and the gouramis have theirs. Having a sponge pre-filter and flow control also benefits the live plants in my tank, especially the java fern, which proliferates easily and abundantly, but often can be damaged by filter intakes when the young ferns float about the tank before finding a piece of driftwood or other material where they can grow. In terms of reliability, I have run this filter steadily for four months as of the writing of this review, and, used in conjunction with some additional sponge filters, this has proven itself to be reliable. It is self-priming and consistently restarts automatically following a power outage. It even runs steadily during a partial water change, and the 'Bio-Falls' system seems to provide additional aeration for the water, which is important not only for providing oxygen for my water-breathing creatures, but helps remove toxic substances, which benefits all of the creatures in my tank, including the air-breathing gouramis. To conclude, I will provide a brief list of pros and cons: PROS: 1. It is inexpensive 2. It is effective in terms of mechanical, chemical, and biological filtration 3. It is reliable and self-priming 4. It fits the inexpensive Fluval sponge pre-filters 5. It has flow control CONS: 1. Replacement cartridges are not easily found in stores 2. Replacement cartridges are expensive (but this can be easily addressed by using an inexpensive sponge pre-filter, extending the cartridge life to at least a full month)

### ⭐⭐⭐⭐⭐ Penn Plax Cascade Hang-on Aquarium Filter Review
*by R***R on January 20, 2020*

The story of my review may be like a few others . I ordered the first Penn Plax Cascade Aquarium and it arrived on time and by appearance not damaged. Putting it together was easy. I put it in my 20gal fish tank. I plugged it in and the motor and impeller started up and it started to work just fine. I then checked on it about an hour later and the motor was humming and the impeller had stopped. I took it out and checked the directions and all was correct. I put in back into the tank and it ran for about a minute and then the impeller stopped working. I tried to hand turn the impeller by hand but it would not work. While the unit worked initially it seemed to be doing a good job and the motor was very quiet. So I put in a return request. I received a response within a few hours. I returned the unit and within 3 days my replacement came. I put it together and plugged it in and tested it in my sink. It worked just fine. I then put it into the tank. Again it worked fine. I checked on it in an hour and it was working perfectly. I have now had it 2 weeks and I love it. No problems, motor quit and it does a good job to keep the water clean. I like the option of being able to adjust the water flow. I would highly recommend this product. My only advice is that after you put it together test it first before putting it into your fish tank. I was impressed with Amazon's return policy. I have been buying from Amazon for more then 6 years and purchased almost 80 items, this was only the 2nd time I had to return an item. I gave it 5 stars because not matter what the item is or where you purchased it you will get lemon from time to time. In the end the new returned item worked great.

### ⭐⭐⭐⭐⭐ Adorable & Functional!
*by D***D on November 12, 2025*

Ok. First, this is so little it's adorable! Would I use it on a 10g? Absolutely not. I have this on a 3g tank that has a betta and a couple shrimp in it. The flow rate is adjustable. It's quite. It fits a 3g rimless tank! I put a sponge on the intake....cuz shrimpies. I also cut my own sponges I have for other tanks instead of the premade ones. Worked just fine! It's only been up a day. So not sure the longevity of product. Will update if it crashes to quickly.

## Frequently Bought Together

- Penn-Plax Cascade 20 Power Filter – Mini Hang-On Filter with Quad Filtration – Great for Freshwater and Saltwater Setups, (Model: CPF6)
- Penn-Plax CPF6C3 Cascade Hang-on Power Filter Replacement Media- Pack of 1 (3 count)
- Penn-Plax Cascade Replacement Filter Cartridges CPF6C3 (9-Pack)

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*Product available on Desertcart Egypt*
*Store origin: EG*
*Last updated: 2026-05-18*