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AquaMaxx HOB-1.5 Hang-On-Back Protein Skimmer w/ Bubble Stopper


Starting at $22/mo with . Learn more

Item #: UJ946291

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AquaMaxx HOB-1.5 Hang-On-Back Protein Skimmer w/ Bubble Stopper

This bundle includes:

The AquaMaxx Bubble Stopper for HOB-1.5 Protein Skimmers

It`s no secret to seasoned hobbyists that you can expect microbubbles from any skimmer, at any point in time, which can be caused by many factors that can include: additives, greasy food, new filter socks, etc. The Bubble Stopper easily attaches to the outlet of the HOB-1.5 to reduce microbubbles, or to be used as a precaution to microbubbles entering the aquarium.

The NEW AquaMaxx HOB-1.5

This hang-on-back skimmer is an upgraded and more-powerful version of AquaMaxx`s best-selling HOB-1. With an enlarged bubble diffusor and reaction chamber, the new HOB-1.5 is able to fully harness the power of the Shark 1.0 pump to maximize foam production and protein extraction. The custom conical bubble diffusors help minimize the turbulence inside the reaction chamber and help to direct water linearly up toward the collection cup. More waste than ever is pulled out of your aquarium and into the easy-to-remove collection cup.

AquaMaxx skimmers are computer-precision engineered and utilize the latest filtration technology to deliver the performance and value you are looking for in a protein skimmer.

Ease of Use

AquaMaxx HOB-1.5 protein skimmers is easy to setup and maintain. Just move the collection cup up or down to adjust the foam level to wet or dry.

Maintenance is simple. A removable collection cup makes cleaning easy. Plus, every AquaMaxx protein skimmer includes a drain fitting for hobbyists who want to setup a separate reservoir for skimmate.

Water quality and consistency is crucial to the success of a marine aquarium. An AquaMaxx HOB Series I protein skimmer will help to ensure that success.

Compact Design

AquaMaxx protein skimmers were designed from the ground up with the hobbyist in mind. AquaMaxx HOB Series I protein skimmers have the pump placed inside the skimmer itself to save space, reduce noise and improve efficiency.

All AquaMaxx protein skimmers are computer designed. Each unit is precision-cut and made of polished cell-cast acrylic.


AquaMaxx HOB-1.5 Skimmers feature high-quality Italian-made Sicce pumps. Each Sicce pump motor block is then modified and fitted with proprietary AquaMaxx needle wheel impellers. With the precise modifications and upgrades, performance is boosted much beyond that of a stock pump. The upgraded AquaMaxx ‘Shark’ pump is capable of drawing in significantly more air and chops them up to the optimum bubble size for protein extraction. These pump and protein skimmer combinations deliver unprecedented performance and reliability. Accumulated protein and organics will be vigorously removed from your tank so you can focus less on maintenance and more on enjoying your piece of the reef.


  • Modified and upgraded Italian Sicce needle-wheel pump produces optimum bubble size for high-efficiency protein skimming
  • Efficient, durable and reliable
  • Simple to set up and operate
  • Cell-cast acrylic construction


  • Dimensions: L 7.5 x W 3.5 x H 17 Inch
  • Pump: AquaMaxx SHARK 1.0 (modified and upgraded Italian Sicce pump)
  • Pump power consumption: 11 Watts
  • Outlet size: 3/4 Inch
  • Minimum tank height 10-7/8"
  • Filtration Rating: up to 75 Gallons (light bioload) or 40 Gallons (heavy bioload)
  • Requires approximately 4" of clearance to remove collection cup.
  • Fits aquarium rims up to 3/4" thick.

All of our products are backed by a 60-day return policy although the skimmers will also carry a 1-year manufacturer warranty from AquaMaxx. Each skimmer will include detailed instructions and diagrams to help hobbyists get up and running immediately.

Manufacturer information

AquaMaxx is a Southern California-based aquarium supply company that entered the market in mid-2008 with a line of affordable metal halide bulbs. The brand quickly gained recognition as word spread about the high quality and low cost of their lamps. In 2009, AquaMaxx released a line of aquarium filter socks and, in early 2010, unveiled an assortment of high-performance protein skimmer accessories and upgrades.

5 Stars


Reviewed on
March 01, 2021

Yes, I would recommend this.

Outstanding Product

Pros: Very well built, and not loud at all

Cons: To early to tell

This is a great product. My order arrived quick. The product appears to be very well built. So far so good.

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Reviewed on
February 25, 2021

Yes, I would recommend this.

Awesome HOB Skimmer

Pros: Great skim, easy to prime, looks good, appears durable, can get replacement parts directly from Marine Depot

Cons: A little noisy

I purchased this skimmer and so far I am impressed. It is a little noisy but it isn't horrible. It is super easy to prime, I just remove the yellow hose and hold my thumb over it until water reaches the outlet pipe then release. It does stay primed when I turn it off for feeding. On my medium load 45 gallon tank I have to empty the collection cup around once a week, I try to run a pretty dry skim. I highly suggest the bubble stopper (which comes with this combo) as it almost completely eliminates microbubbles in your tank. Just make sure you clean the foam or it could become a nutrient trap. I had a couple of faulty parts but Marine Depot was 100% helpful and promptly shipped replacement parts so I highly recommend purchasing from these guys.

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Reviewed on
February 01, 2021

Yes, I would recommend this.

works great

works well HAD FOR 2 YEARS

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Reviewed on
January 25, 2021

Yes, I would recommend this.

Works well

Pros: All

Cons: None

I’ve had it 3 weeks and I can’t believe how quite and how much bubbles it creates. Easy to adjust cup. Instructions could be a little better but you could figure it out. I’m very happy with purchase I did buy the bubble stopper but need to water salt crep

Was this review helpful? 3 0


Reviewed on
December 04, 2020

Yes, I would recommend this.

It works

Pros: it works very well

Cons: none.

installed on a 29 Gal and after the very first day I had to clean the cup out. works fast and quiet its packed with power and small on space. well worth the money hands down.

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Reviewed on
August 05, 2020

Yes, I would recommend this.

Great Combo

Pros: Does a great job. Skims not matter what. Neat overflow built in.

Cons: Assembly direction are terrible. Watch a lot of YouTube videos before trying to assemble.

Make sure to put these two things together. They really complement each other. The skimmer is a workhorse and the paired with the bubble stopper you will have zero microbubbles.

Was this review helpful? 3 0


Reviewed on
June 23, 2020

No, I would not recommend this.

Customer service sucks

Pros: Great skimmer when it works

Cons: Bad customer service

The protein skimmer works great when it works. I did some maintenance on it and now it won’t stop over foaming. I did everything they said to do and it’s still screwed up. Emailed customer service 2 weeks ago and still no response.

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Reviewed on
April 20, 2020

Yes, I would recommend this.


Pros: Powerful motor, produces lots of skim.

Cons: Terrible assembly instructions, non existant. However, Marine Depot has a terrifc YouTube Video that shows you on to put this together.

I have tried HOB skimmers in the past and have never had great results. This is the first one that has worked incredible! Emptying collection cup almost daily, started skimming within 48 hours on a well established tank. Quiet and very powerful.

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Reviewed on
April 15, 2020

Yes, I would recommend this.

Great Skimmer

Pros: quick break in period, VERY quiet powerful skimming

Cons: none so far, has been well worth the money

I've had my HOB 1.5 for a little over a week now and I love it, it's producing great skimmate already and seems like it broke in really quick. The first one I received did have a couple of broken pieces but Marine Depot replaced it quickly and I couldn't be more impressed.

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Reviewed on
February 04, 2020

Yes, I would recommend this.

A year later review

Pros: Fictional. Performance.

Cons: Debris build up inside got to clean every 2-4 months

I have had no problems with it other than debris build up inside. You have to clean the inside every 2-4 months depending on your bio load . Make sure intake is not clogged with algea or it will mess with performance.

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