Marineland Penguin Power Filter 350 Review

Review of Marineland Penguin Power Filter 350: Hang-on Back Filter

4 Stars
4.5 Stars
Ease of Use:
4.5 Stars
4.5 Stars
While the Penguin 350 is well-built, it still has quite a few movable parts that are susceptible to breakage.Equipped with everything you need and a bit more in the form of the Bio-wheels, you can be sure that this item is packed with useful features that make it a reliable pick.It might seem complicated to operate but the Penguin 350 is actually very easy to use.Another reason to give this product a try is its very friendly price tag.
  • Unique design that is utilized to create more surface area for the different kinds of media
  • No-shutdown maintenance
  • Easy to fix in case you experience some issues
  • Great water flow
  • Easy to customize
  • Effective aeration
  • Makes lots of micro bubbles so the water doesn’t look completely clear
  • Has movable parts that can break down
  • Some find it to be a bit noisy
  • Not necessarily pretty to look at

Deemed as an underrated aquarium filter by many experienced aquarists, the Marineland Penguin Power Filter 350 does offer a lot of great things. We’re big fans of its impressive water flow and biological filtration which are its stand out features. Its ease of use and maintenance are also noteworthy.

One of the reasons why choosing an aquarium filter is a bit of a challenge is the fact that most of them are designed the exact same way. Their main differences lie in their flow rate and filter sizes, so there are lots of similarities that can really confuse you when you try to take a pick.

If you want something slightly different from the most popular options available for your aquarium filtration, the Marineland Penguin Power Filter 350 would be a nice option. This hang-on back filter may not seem too different from other HOBs in the market today but with its Bio-Wheel, it can offer more to your aquarium than others.

With this design, it promises to provide better filtration and a healthier environment for your aquatic pets. As the wheels are also meant for biological filtration, it also offers more effective cultivation of beneficial bacterial growth.

If the Penguin 350 tickled your fancy, read on to learn more about the product.

Who Should Get the Marineland Penguin Power Filter 350

Before we go into detail as to what the Penguin 350 can offer, you might be wondering whether it’s a good match for you or not. To answer this question, there are a few things to take into consideration.

First off is the noise that this product makes. It’s not particularly loud, especially since it comes with noise-dampening lids. But because of the Bio-wheel, you should expect that it’s not as quiet as other kinds of filters. With this said, it might not be the right match for those who are planning to equip a tank inside their bedroom.

If you’re after a truly powerful filter, however, this can be a solid pick its 350 GPH guarantees effective cleaning.

What’s in the Box

When you purchase a Marineland Penguin Power Filter 350, here are the items that you’ll get in the package:

  • A massive main unit
  • Power cord
  • 2 filter cartridge
  • Flow control valve
  • Intake tube
  • Strainer 
  • Instruction leaflet

Feature Overview

How does the Marineland Penguin 350 get the job done? Here are its key features that will help you better understand how it works.

350 GPH, 75-Gallon Capacity

With a powerful pump, the Penguin 350 can turn over 350 gallons of water per hour. This is a very quick water flow rate that you’ll definitely give your tank a huge leeway even if you max out at 70 gallons. As a result, you’re always guaranteed that it’s more than capable of keeping the water inside your tank clean.

3-Stage Filtration

Like the other popular filters in the market today, the Penguin 350 also comes with a multi-filtration system. Its key feature, the Bio-wheel, is meant to provide biological filtration. Its design makes sure that the water is saturated with the beneficial bacteria that are necessary to be present in a healthy tank. 

It also comes with 2 foam sponge filter cartridge that is added for effective mechanical filtration. To top it all off, it also comes with activated carbon for maximum and thorough chemical filtration.

Due to the size of its filter holder, some folks also opt to add a few more items to further boost its performance. Additional pieces are commonly put in to take up a notch any of the three stage filtration processes.

Bio-Wheel Filters

As mentioned above, the Penguin 350’s key feature is its pair of Bio-Wheel filters. This revolutionary and patented bio-wheel power filters feature is added for three reasons. The first is to introduce beneficial bacteria to the water more effectively with biological aquarium filtration. Secondly, it’s designed to eliminate toxic ammonia and nitrite upon contact. By keeping it moving, the bio-wheel promises 50% more surface area and ensures more efficient water filtering.

Vented Covers

The Penguin 350 comes with two piece vented covers and adjustable mid-level intake strainers to make the penguin power filter more noise reducing. They do a great job in noise reduction but you will still hear some water splashing.

How to Use the Marineland Penguin Power Filter 350

The Marineland Penguin Power Filter 350 is a bit different when compared to the other aquarium filters so you might need some help when it comes to its set up. To make things simpler for you, this video can give you a few good ideas and instructions on setting up and customizing your own aquarium filter:

Alternative Options

In case you still can’t decide whether the Penguin 350 is the right pick for you, you can also check out these other items to see if they’ll appeal to you more:

Final Verdict

There may be mixed opinions about the Marineland Penguin Power Filter 350 but if we’ll note of the expert opinion of experienced aquarists, this item does promise a lot of great things. Not only does it offer excellent water flow but it’s effective aeration and biological filtration with bio-wheel and the mid level strainer make it even more appealing, even more so when combined with the help of the filters feature noise reducing mechanisms. So if you’re looking for a product that offers more than just regular water cleaning, this might just turn out to be your perfect match.

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