5 Best Hang On Protein Skimmers


There are several different types of protein skimmers available in the fish keeping hobby today, and they all have their own distinct advantages and disadvantages. If you have done your research, and you have decided that a hang on protein skimmer is the one you want, then here are the 5 best HOB protein skimmers on the market.

1. Reef Octopus Classic 100-HOB

Reef Octopus Classic 100 HOB Protein SkimmerOne of the most popular hang on back protein skimmers is the Classic 100 from Reef Central. We have used this skimmer for a long time, and we have nothing but good things to say about it.

The design is very minimal, and it is very space-effective. It mounts from the inside of the aquarium, and it only takes a few minutes to set up. The Reef Octopus Classic 100 can filter any aquariums up to the size of 105 gallons, making it perfect for the majority of home aquariums.

If you are in the market for a top quality HOB skimmer, but don’t want to shell out hundreds of dollars, then this is the one we would recommend to you.

Product Features:

  • Compatible with aquariums up to 105 gallons
  • Built in Aquatrance 1000 pump
  • Easy to set up. Simply hangs on the back of the tank.
  • Comes with an adjustable surface skimming attachment
  • Measures just 8 x 3 x 17 inch (L x W x H)

Last update on 2020-09-28 / Affiliate links / Images from Amazon Product Advertising API

2. Aqua Euro Hang On Protein Skimmer

Aqua EuroFor tanks on the larger side (upwards of 200 gallon), the HOB skimmer from Aqua Euro will probably be the best choice for you. It comes in at around the same price as the Classic 100, but it is definitely a larger piece of equipment, and with it’s ability to filter up to 200 gallons of water, it would be overkill for small, home aquariums.

Although this protein skimmer is larger in size than the Classic 100, it’s not any harder to install and set up. There can be a slight bit of noise for the first few days, but it will quite down eventually, and will give off nothing more than a slight buzz.

The only negative review we could find, was about the buzzing noise being too loud for that particular customer, but from our experience, and the other people who have left a review, the buzzing sound will subside eventually.

Overall, it’s a fantastic protein skimmer for larger tanks, and you certainly get a lot for your money. If you want something powerful enough to skim your large reef aquarium, then this one is for you.

Product Features:

  • It requires only 3 and a half inch between the tank, and the wall.
  • Easy to install, and set up. Simply hang on the back of your tank, and plug it in.
  • Measures 3 x 8 x 18 inch (W x L x H)
  • Built using thick, high quality acrylic and with superior craftsmanship
Aqua Euro USA Protein Skimmer 55
  • High grade acrylic construction
  • High quality needle wheel pump
  • Highly efficient, durable, reliable
  • Simple to set up and operate
  • Includes bubble plate diffuser

Last update on 2020-09-28 / Affiliate links / Images from Amazon Product Advertising API

3. Aquamaxx HOB-1 Hang On Back Skimmer

AquaMaxx_HOB-1_Protein_SkimmerPossibly the most powerful protein skimmer on this is the Aquamaxx HOB-1. Perfect for aquariums up to 75 gallons, this sleek and quiet protein skimmer is equipped with a responsive collection cup and a powerful submersible pump.

The design is so light, it can even be used on nano aquariums, or any other type of small aquarium. The team over at Aquamaxx have left no stone unturned with this one. Each skimmer is built with computer-precision engineering, and they utilize the latest and greatest filtration technology to make sure the job is done exactly how you would expect it to be done.

The HOB-1 are pretty simple to use. Just slide the collection cup up or down, depending on how you want to set the foam level (Wet or dry). The collection cup is removable, so cleaning is incredibly simple. The best part about this protein skimmer is the drain fitting that is included with the purchase, which allows you to set up a separate reservoir for skimmate, if required.

AquaMaxx have always been one of my favorite brands, because they understand the hobby inside and out. If you want to keep your salt water aquarium in tip top condition, then we highly recommend the HOB-1.

Product Features:

  • Recommended for tanks ranging from 50 to 75 gallons, but it can be used perfectly fine with smaller tanks.
  • Utilizes a Sicce Syncra 1.5 pump, which is included.
  • Consumes just 11 Watts of power
  • Measures just 7.5 x 3.5 x 17 inch (L x W x H)
AquaMaxx HOB-1.5 Hang-On-Back Protein Skimmer
  • Dimensions: L 7.5 x W 3.5 x H 17 Inch
  • Minimum tank height 10-7/8"
  • Requires approximately 4" of clearance to remove collection cup.
  • Fits aquarium rims up to 3/4" thick.

Last update on 2020-09-28 / Affiliate links / Images from Amazon Product Advertising API

4. Coralvue Technology BH-1000 Octopus

Reef Octopus BH100Built using a unique, external fitting design, the BH-1000 is a very good protein skimmer which is perfect for those with little space between the back of their tanks, and the wall.

Because of it’s unique building design, the BH-1000 Octopus is mounted on to the tank externally, from the bottom of the skimmer, and the pump is also placed externally, ultimately reducing the amount of heat being transferred to the water.

Some larger hang on back protein skimmers have been known to overheat, and cause a fluctuation in aquarium temperature, which can compromise the safety of the entire reef, so eliminating that concern will be useful for all hobbyists.

The price point is spot on for such a quality skimmer. There are two models to choose from; One for 100 gallon tanks, and the other for 125 gallon tanks. Overall, it’s a very good protein skimmer, and we have no problem recommending it you our readers.

Product Features:

  • Unique external design can save space, and prevent overheating.
  • Parts are easy to remove and clean.
  • Comes with an external 1000 watt pump
  • Made from high quality acrylic instead of plastic

Last update on 2020-09-28 / Affiliate links / Images from Amazon Product Advertising API

5. Reef Octopus BH90 Hang On Protein Skimmer

BH90Another popular hang on back protein skimmer on the market is the BH90 from Reef Octopus. Just like the BH-1000 which we mentioned before, the BH90 also utilizes a unique design which is different from a lot of other skimmers.

First of all, the body is cylindrical in shape, which looks great, but it’s not optimal for those with little space between the tank and the wall.

The other unique feature on the BH90 is way it uses a syphon to feed the watter into the protein skimmer, ultimately reducing the amount of load on the pump, and increasing the amount of air generated.

The Reef Octopus BH90 is perfect for getting rid of the oily buildup that can accumulate on the top of reef tanks, as well as any other scum and mater that may accumulate. Again, this one is moderately priced, but it’s definitely worth it. It performs well, it looks good, and it’s built to last. Job well done, Reef Octopus!

Reef Octopus BH90 Hang on Protein Skimmer
  • 4" Round Body HOB Skimmer w/external AQ1000s
  • Dim: 7.5" x 7.5" x 23.8"
  • Rated up to 130gal

Last update on 2020-09-28 / Affiliate links / Images from Amazon Product Advertising API

Have We Missed Your Favorite?

These are just 5 of our favorite hang on back protein skimmers, out of the possible hundreds that are available on the market today. What do you think to our list? If you could add, or take away any, which ones would you choose and why?