---
product_id: 285757619
title: "Penn-Plax Cascade 300 Power Filter – Hang-On Filter with Quad Filtration – Great for Freshwater and Saltwater Setups"
brand: "penn-plax"
price: "€ 232.59"
currency: EUR
in_stock: true
reviews_count: 5
category: "Penn Plax"
url: https://www.desertcart.be/products/285757619-penn-plax-cascade-300-power-filter-hang-on-filter-quad
store_origin: BE
region: Belgium
---

# 300 GPH flow rate Quad filtration media Adjustable flow knob Penn-Plax Cascade 300 Power Filter – Hang-On Filter with Quad Filtration – Great for Freshwater and Saltwater Setups

**Brand:** penn-plax
**Price:** € 232.59
**Availability:** ✅ In Stock

## Summary

> 💧 Elevate your aquarium game with the Cascade 300 — where clarity meets control!

## Quick Answers

- **What is this?** Penn-Plax Cascade 300 Power Filter – Hang-On Filter with Quad Filtration – Great for Freshwater and Saltwater Setups by penn-plax
- **How much does it cost?** € 232.59 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/285757619-penn-plax-cascade-300-power-filter-hang-on-filter-quad)

## 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

- • **Sleek Hang-On Design:** Space-saving, secure mounting with an adjustable lift tube (8.25”–12.25”) that fits seamlessly into any freshwater or saltwater setup.
- • **Powerful 300 GPH Flow:** Ensures crystal-clear water for tanks up to 100 gallons, keeping your aquatic ecosystem vibrant and healthy.
- • **Quad Filtration System:** Activated Carbon, Poly Fiber Floss, Bio-Sponge, and Bio-Falls work in harmony to remove toxins, odors, and discoloration.
- • **Customizable Water Flow:** Adjust the flow with an easy-turn knob—perfect for feeding times or delicate aquatic species.
- • **Bio-Falls Oxygenation Boost:** Enhances water oxygen levels while naturally reducing harmful ammonia and nitrate for a thriving tank.

## Overview

The Cascade 300 Power Hang-On Filter delivers a robust 300 GPH flow rate suitable for aquariums up to 100 gallons. Featuring an adjustable flow knob and a quad filtration system—including activated carbon, poly fiber floss, a bio-sponge cartridge, and Bio-Falls oxygenation—this filter efficiently removes toxins, odors, and discoloration. Its sleek, space-saving hang-on design with an adjustable lift tube fits both freshwater and saltwater tanks, making it a versatile and essential upgrade for any serious aquarist.

## Description

Penn-Plax presents the The Cascade 300 Power Hang-On Filter quietly delivers crystal clear water throughout the aquarium. This filter pushes water at 300 Gallons per Hour (GPH) for tanks up to 100 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. The lift tube extends between 8. 25” (min) and 12. 25” (max). Please be aware that the filter indeed does make some noise. EXTREMELY BENEFICIAL: This Cascade filter utilizes disposable, double-sided media cartridges that contain Activated Carbon and 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. Media cartridges are recommended to be replaced once a month. REVOLUTIONARY: The Cascade 300 Power Hang-On Filter features a Bio-Sponge cartridge that optimizes colonization of anaerobic bacteria, and is independent from the first stage filter media. In addition, our Bio-Falls system enhances water oxygenation, and aids with removing ammonia and nitrate.OVERALL MEASUREMENTS: 8. 25” (H) x 11. 25” (W) x 6. 25” (D).

Review: economicos y muy buenos - silenciosos y funcionales
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)

## Features

- QUIET & EFFICIENT: The Cascade 300 Power Hang-On Filter quietly delivers crystal clear water throughout the aquarium. This filter pushes water at 300 Gallons per Hour (GPH) for tanks up to 100 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. The lift tube extends between 8. 25” (min) and 12. 25” (max). Please be aware that the filter indeed does make some noise.
- EXTREMELY BENEFICIAL: This Cascade filter utilizes disposable, double-sided media cartridges that contain Activated Carbon and 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. Media cartridges are recommended to be replaced once a month.
- REVOLUTIONARY: The Cascade 300 Power Hang-On Filter features a Bio-Sponge cartridge that optimizes colonization of anaerobic bacteria, and is independent from the first stage filter media. In addition, our Bio-Falls system enhances water oxygenation, and aids with removing ammonia and nitrate.
- OVERALL MEASUREMENTS: 8. 25” (H) x 11. 25” (W) x 6. 25” (D)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0002DJ82G |
| Allergen Information | Codfish Free |
| Batteries Included | No |
| Best Sellers Rank | #83,209 in Pet Supplies ( See Top 100 in Pet Supplies ) #5,317 in Aquarium Accessories |
| Color | Clear blue |
| Customer Reviews | 4.1 4.1 out of 5 stars (4,493) |
| Date First Available | 7 August 2012 |
| Item Form | Wet/Dry |
| Item Weight | 0.28 g |
| Item model number | CPF5 |
| Number of Items | 1 |
| Pet Life Stage | All Life Stages |
| Pet Type | Fish and Aquatic |
| Product Dimensions | 15.88 x 28.58 x 20.96 cm; 0.28 g |
| Quantity | 1 |
| Size | Cascade 300 |
| Specific Uses | Indoor |
| batteries required | No |

## Images

![Penn-Plax Cascade 300 Power Filter – Hang-On Filter with Quad Filtration – Great for Freshwater and Saltwater Setups - Image 1](https://m.media-amazon.com/images/I/71HCWp6gcAL.jpg)
![Penn-Plax Cascade 300 Power Filter – Hang-On Filter with Quad Filtration – Great for Freshwater and Saltwater Setups - Image 2](https://m.media-amazon.com/images/I/71t9WDTuUHL.jpg)
![Penn-Plax Cascade 300 Power Filter – Hang-On Filter with Quad Filtration – Great for Freshwater and Saltwater Setups - Image 3](https://m.media-amazon.com/images/I/61zhiGsovWS.jpg)
![Penn-Plax Cascade 300 Power Filter – Hang-On Filter with Quad Filtration – Great for Freshwater and Saltwater Setups - Image 4](https://m.media-amazon.com/images/I/61AIuLtYjzL.jpg)
![Penn-Plax Cascade 300 Power Filter – Hang-On Filter with Quad Filtration – Great for Freshwater and Saltwater Setups - Image 5](https://m.media-amazon.com/images/I/71tnjSN8VDL.jpg)

## Available Options

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

## Questions & Answers

**Q: Hey guys, what is the voltage? does it go from 110 v to 240v? i don't see it on amazon uk. if it doesn't work with 240v, what can i do? thanks.**
A: Thanks for your question. This filter is 110V and there's no way to adjust it to 240V for England. We wouldn't recommend running this filter with a power converter, so your best bet may be to stop by your favorite local aquarium store to purchase your filter.

**Q: I always buy the replacement carbon filters but where are the 2 black replacement foam sponge filters?**
A: When I buy these filters I throw away the black foam.I used the white filter fiber works so much better..and gets your water clean and clear faster..

**Q: I have a 56 gallon tall tank and need a filter that works well in this type. Will this model work well in the tall tank type?**
A: I think you will be happy with this filter. I am using one in my 200 gal fish tank I like it because 1. it is a good filter 2. It keeps the water oxygenated. ( lot's of bubbles )  :-) when I get my 75 gal tank ready I all ready have one for it.

**Q: What is the KWH for the 300 per day?**
A: idk but its probably not anything your going to notice

## Customer Reviews

### ⭐⭐⭐⭐⭐ economicos y muy buenos
*by J***S on 3 May 2024*

silenciosos y funcionales

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

### ⭐⭐⭐⭐⭐ Adorable & Functional!
*by D***D on 12 November 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 300 Power Filter – Hang-On Filter with Quad Filtration – Great for Freshwater and Saltwater Setups
- Penn-Plax Cascade 300 GPH Hang On Replacement Media for The Cascade 300 Filter, 3 Pack
- Penn-Plax Cascade 300 GPH Hang On Filter Aquarium Bio Sponge Replacement; 2 Pack

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*Product available on Desertcart Belgium*
*Store origin: BE*
*Last updated: 2026-08-12*