Mighty Aquarium Filter - HOB, Hang on Back Nano Aquarium Filter

$15.99 USD

Usually ships in 1-2 business days from our fulfillment center

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The Mighty Aquarium Filter series features 5 sizes to accommodate a range of aquarium sizes. Hang on back filters, commonly abbreviated to HOB, are a classic method for providing essential filtration to the aquarium. Easy to install and use, HOB filters are a fantastic choice for beginner hobbyists or for those who are interested in easy accessibility. These compact filters are budget-friendly and hang directly on the rim of the aquarium. The Might Aquarium Filter HOB features leveling knobs to ensure a secure fit and adjustable flow. We recommend HOB filters for shrimp tanks, Betta tanks, nano tanks and other aquarium setups that would do better with gentle flow. The Mighty Aquarium Filter comes with everything needed to get started - Each model is preloaded with matching media for initial use and includes one replacement set. We recommend purchasing extra replacement media to ensure a quick and easy refresh when needed

What we like about the Mighty Aquarium HOB Filter

Beginner-Friendly: HOB, aka hang on back, filters are a top pick for beginner hobbyists due to ease of use and simple design. This type of filter is commonly used for nano aquariums, breeding projects or aquariums that require a gentler flow.
Quick Installation: HOB filters are easy to install and can be quickly secured to the rim of the desired aquarium. The Mighty Aquarium HOB filter includes a leveling knob that ensures the filter unit stays upright. This added stability improves flow and allows for optimal performance.
Easy Maintenance: Hang on back filters are easy to maintain and clean. When compared to canister filters, HOB filters can be easily dismantled and thoroughly cleaned. Like other aquarium filters, the included media (sponge or cartridge) should be cleaned regularly and periodically replaced. Click here to purchase replacement media!

Color: Clear Smoke
Includes: Intake tube, intake sponge, and filter media

Model Specifications


Model	Dimensions (IN)	Max Flow Rate (GALLONS PER HOUR)	Tank Recommendations
MG02 XS	3.27 x 3.15 x 4.33	15.86	Ultum Nature Systems 20C
MG04 S	4.01 x 3.31 x 4.57	31.07	Ultum Nature Systems 3N Ultum Nature Systems 60L Ultum Nature Systems 25C Ultum Nature Systems 5N
MG08 M	5 x 3.78 x 5.20	63.40	Ultum Nature Systems 90LS Ultum Nature Systems 30C Ultum Nature Systems 45S
MG12 L	5.71 x 4.33 x 5.7	120	Ultum Nature Systems 45U
MG20 XL	7.44 x 5.20 x 7.13	170	Ultum Nature Systems 60U

Additional Specifications XS MG-02:
- Power: 4W
- Power Consumption: AC110-120V / 60Hz
- Usage: 1-3GAL

Additional Specifications S MG-04:
- Power: 4W
- Power Consumption: AC110-120V / 60Hz
- Usage: 2-5GAL

Additional Specifications M MG-08:
- Power: 4.5W
- Power Consumption: AC110-120V / 60Hz
- Usage: 4-10GAL

Going With the Flow—or Against the Current? Aquarium Filtration 101

Are you choosing the right aquarium filter for your planted tank? For many, a new tank includes a filter purchase to “keep it clean”. Is it really that straightforward? Our simple answer is no, and before you scroll past, hear us out.

There are many factors to consider when planning or budgeting for your aquarium’s filtration. We’ll argue that filtration is the heart of an aquarium. It is one of the most important pieces to keep a successful planted tank. Proper filtration offers several benefits: improving flow, and circulation, increasing water volume and keeping your tank clean in between water changes and filter maintenance.

A smaller hang-on-back aquarium filter is a great choice for nano tanks

Larger canister filters provide flexible, customizable flow options and a cleaner aesthetic for all aquariums

Why is better flow and circulation important?

Strong consistent flow is better for CO2 and nutrient distribution. Better flow means fewer dead spots in an aquarium. Dead spots are areas that receive little to no flow and are usually where the first signs of algae will appear. This is why we will always recommend larger filters with reasonable flow rates for aquascapers of all levels.

Keep in mind that it’s common practice for aquarium filters to be rated for much larger tanks. While these ratings may be accurate for an empty tank, they often don’t account for a multitude of factors that can alter this rating—like hardscape blocking flow or the addition of filter media such as sponges or bio media that can reduce flow rate. This means that a canister filter rated for aquariums up to 29 gallons might actually be perfect for a UNS 45U (9-gallon) tank instead.

While we’re on the topic of canister filters, one of their best advantages is the flexibility with positioning! This type of aquarium filter lets you place the inflow and outflow pipe wherever you’d like, allowing you to intentionally divert or guide flow direction in a way that will suit your planted tank best. You can also adjust flow strength and style with optional valve taps and lily pipe accessories! In comparison, hang-on-back filters are one-directional and more limited. With this type of filter, you’d need to physically move the entire thing to another area of the tank with little wiggle room for customizing. Overall, a big canister for a small aquarium isn’t a problem. We suggest trying one size larger and your planted aquarium will grow into it!

Aquascaper’s tip: Canister filters are also compatible with inline equipment like heaters, CO2 diffusers and UV filters. Inline aquarium equipment is a great way to provide whatever benefit you need, while keeping it out of your tank. Out of sight, out of mind. Now that’s nice and tidy!

Aquario Inflow and Outflow pipes positioned in the most optimal corner of aquarium for efficient flow. Notice the water ripples that provide visual indication of full circulation.

Accessorized Aquario Neo Flow outflow to create gentler flow for Betta Fish

A canister filter can be used on even smaller nano aquariums. This one is a 6 gallon tank equipped with an Ultum Nature Systems Delta 30.

Other benefits of getting a large aquarium filter

If you’re skeptical, think about a vacuum for your home. A larger vacuum can pick up more dust and debris before needing to be emptied, making the job quicker. The same logic applies to an aquarium! Canister filters require less frequent maintenance when compared to hang-on-back (HOB) filters because they’re simply larger and hold more water volume. A larger surface area also means more room for beneficial bacteria to grow. A healthy colony can keep your planted aquarium stable for longer in the event of a power outage or if you need to shut down your tank for an extended period of time.

We can’t knock HOB filters. They have their pros as well such as affordability and easy set up. They’re great for nano tanks, but they will require more frequent maintenance.

Ultum Nature Systems UNS 20C Nano Shrimp Rimless Glass Aquarium Tank Iwagumi Aquascape

A 2 gallon cube aquarium with an HOB filter

Ultum Nature Systems UNS 16C Nano Shrimp Rimless Glass Aquarium Tank Iwagumi Aquascape

A smaller 1 gallon cube shrimp tank with a canister filter

Ultum Nature Systems UNS 45F Long Rimless Glass Aquarium Tank Iwagumi Aquascape

Two HOB filters to create a complete circular flow in a shallow aquarium, but the greatest visually.

Ultum Nature Systems UNS 45L Long Rimless Glass Aquarium Tank Iwagumi Aquascape

A similar sized aquarium with a cleaner look and stronger flow from a canister filter

How often do I need to clean my aquarium filter?

Too often, we've learned that some aquarists believe filter cleaning isn't necessary—a myth, a fable! Please, don’t do this. A good rule of thumb is to clean hang-on-back (HOB) filters about once every two weeks, and canister filters every 3 to 6 months. As with everything, there are things to keep in mind, YMMV.

Your overall setup, its age and bioload will determine how often you need to buckle up for filter maintenance. Our Ultum Nature Systems R60 Reef System with Ranchu goldfish has a built-in multi-stage filter sump. If you’ve ever kept any type of fancy goldfish, you’ll know they’re cute but create massive amounts of waste. This type of aquarium and fish will require more maintenance to ensure healthy, clean water. Luckily, sump filters are open filter systems making them relatively easy to access and clean. On the flip side, a nano planted tank that’s moderately planted with a small school of nano fish or a single Betta may be perfectly fine with a clean every few months. Like we said, YMMV.

We realize that there are many different types of planted aquariums and aquatic pets that have different flow requirements. For example, Betta Fish and Neo Caridina Shrimp tend to prefer calmer waters. At the end of the day, it’s all about finding the right balance that works for you and your tank. We hope this helped shed some light on choosing the right filter for your planted aquarium.

Shop Aquarium Filtration

Overall rating: 4.7894735 / 5 from 19 reviews.

AI Generated Review Summary

Summary topics

Review topics: ["filter","tank","pump","guy"].

Review highlights

Reviews

clean little machine

"works great thanks"

— john g. (5/5)

"I really love it. I have an other style of filter for an another tank, but this works really well and easy to maintain it, also the price is cheaper."

— FUMIYO (5/5)

"Best little filter ever!! The thing is dead silent:)"

— Will (5/5)

"Filter was damaged but still functional."

— Keagen (3/5)

"It works well"

— Rita (5/5)

Reliable filter

"I have 2 of these filters for different tanks and they get the job done. Easy set up and simple system."

— Andrea E. (5/5)

Really well built product. Does

"Really well built product. Does good job of filtering my 5N."

— Thomas L. (5/5)

Great for my betta

"I have a betta fish with a planted tank that sits in a lot of light this filter, incredibly gentle, but also keeps the water quality pretty good I totally recommend for Betta fish, but I’m sure other fish would do great with it."

— Casey S. (5/5)

Great filter

"Excellent little filter. Very quiet"

— Tony R. (5/5)

Good filter

"Great filter, not loud, fish are happy. Tank is clean and easily adjustable"

— david t. (5/5)

Q&A

Shipping
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To avoid delays, please ensure all order information is accurate and complete. We cannot offer refunds and are not responsible for orders shipped to incorrect addresses due to errors in provided information. Once an order has been shipped, delivery times are determined by the carrier and are outside of our control. On average, shipments arrive within 2–5 business days, excluding weekends and holidays. For more information, please visit our FAQ page.

Returns
If you are not satisfied with your purchase, please contact us within 48 hours of delivery. Approved returns must be shipped back within 14 days of approval. Returned items must be unused, unopened, and in their original packaging. Specific return requirements, if applicable, will be listed on the product’s page. For more information, please visit our FAQ page.

Refunds
No worries, we’ll take care of everything as long as it fits the guidelines above.Most answers to general questions can be found on our FAQ page.