AquaC EV-180 Protein Skimmer w/ JG Fitting + Rio 3100 Pump

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The revolutionary AquaC protein skimmers do not use venturis, downdraft tubes, or air pumps; they employ the patented "Spray Injection System." This innovation allows the protein skimmer to efficiently draw in much more air than any other of the top protein skimmers. This coupled with the superiorly designed compact reaction chamber yields results that will literally blow the waste out of your water.

How does Spray Injection Work?

In 1998, Jason Kim (owner and founder of AquaC) developed a patented process of protein skimming which has come to be known as Spray Injection. Unlike previous forms of skimming, our spray injection method enables huge amounts of air and water to be processed with a relatively small pump. Although it is a simple process, there is still some confusion as to how the spray injector works.

Imagine that you`re washing your car – you`ve got a bucket full of soapy water and a garden hose with a fast-moving stream of water. By placing your thumb over the end of the hose, you can disrupt the stream into a turbulent, high –pressure spray. Now direct that spray down into the bucket of water, and you`ll generate a massive amount of bubbles and air flow. That is exactly how our spray injector works.

The skimmer body acts as a water reservoir – the bucket in the example above. Water is pumped through the spray injector, which has a special nozzle that fans the water out into a pressurized spray. This spray shoots into the skimmer body, generating millions of tiny air bubbles. As the bubbles are formed, more air is sucked into the skimmer as a result of the local drop in pressure and the process continues.

Most other forms of protein skimming rely on special valves or media to generate the air flow, and these parts quickly become clogged with salt, dust, or even mineral deposits. The AquaC spray injector is a relatively large nozzle that resists clogging, and when combined with a pump prefilter, can be considered maintenance free.

The redesigned and improved EV Series skimmers raise AquaC`s spray injection skimming (U.S. Patent # 6,156,209, #6,436,295) to a new level in terms of efficiency, performance, and value. A new baffling system combined with a significantly larger mixing box results in far less turbulence and increased contact time. The net effect is a dramatic increase in skimmer performance despite a drop in pump pressure requirements. AquaC`s molded spray injector now generates a significantly larger number of microbubbles, boosting overall performance to unbelievable levels considering such low pump pressure requirements.


  • Flexible design for in-sump or external applications.
  • The new EV Series skimmers are designed to run in sumps WITHOUT BEING RAISED. The output gate valve has been increased to a height of 10" (EV-120/180 models), which means that as long as your sump level is 9" or lower you will not need to worry about fluctuations having an impact on skimming consistency. The powerful EV-120 can sit in water as deep as 9".
  • The addition of a precision ball valve for airflow control allows the aquarist to fine tune the skimmer`s output. Unlike most other high performance skimmers in this class, the EV is remarkably silent. The spray injection system does not generate the sucking noises typical of venturi and Beckett units.
  • The John Guest "Speedfit" fitting is a great feature you will only find on AquaC ozone-equipped skimmers. This fitting is standard on models EV-240 and above, and can be ordered on the EV-120/180. Aquarists may also connect their calcium reactor effluent line to the skimmer`s speedfit connection. The pH of a calcium reactor effluent typically falls between 6.5-6.9, and over time the addition of this low pH effluent can have a deleterious effect on the system`s pH level. By dosing your effluent directly into the skimmer, excess CO2 will be "blown off" into the atmosphere and the tank pH will remain unaffected.
  • The improved "Twist-Lock" collection cup and cap makes for a secure, flanged connection without the need for set screws or other locking type unions. Simply twist to crack the seal (EPDM gaskets) and removal requires a scant ¼" clearance. The new EV Series skimmers can be operated with AquaC`s auto-waste container, which are available in 2.5 and 5 liter sizes.
  • Increased contact time = more protein removal. The size of the mixing box has been increased on all models by approximately 40%. To accommodate the extra foam the skimmers now feature taller and wider reaction towers, as well.
  • Height: 20"
  • Recommend Pumps: Mag Drive 7 or Rio 3100
  • Footprint: 5.75" x 9"
  • Foam Tower: 5" OD
  • Tank Size: 75-180 Gallons
  • JG Fitting: Optional 1/4" JG fitting
  • Bubble Size: .03–.05mm
  • Water flow-thru rate: 275gph
  • Volume of foam produced: 135cu.in.
  • 3/4" hose barb water input
  • 1" gate valve output
  • 5/8" collection cup drain
  • 3/8" threaded air inlet
  • Gate valve exit is 8" high

Rio 3100 Specifications:
  • Flow Rate: 999gph
  • Dimensions: 6.0" x 3.1" x 4.28"
  • Outlet: 3/4" I.D. Hose
  • Power: 73 Watts
AquaC EV 120/180 Protein Skimmer AquaC EV 240 Protein Skimmer
EV 120/180 Skimmer EV 240 Skimmer

AquaC EV Protein Skimmers Comparison
Description Tank Size
Pump Height Footprint Foam Tower Volume
EV120 40-120 Rio 2100 
Mag-Drive 5
18" 4.75" x 8.5" 90 cu. in.
EV180 75-180 Rio 3100 
Mag-Drive 7
20" 6.0" x 9.2" 135 cu. in.
EV240 100-240 Mag-Drive 12
Iwaki MD40RLT 
26.2" 6.9" x 10.5" 320 cu. in.
EV400 150-400 Gen-X / Mak4 
Iwaki MD40RLT 
Iwaki MD55RLT 
32" 6.75" x 10.75" 475 cu. in.
EV1000 350-1000 Iwaki MD70RLT  32" 9" x 12" 750 cu. in.
EV2000 up to 2000 Iwaki MD100RLT  42" 9" x 12" 1100 cu. in.

AquaC Protein Skimmers in Use
This is one reef aquariums where the AquaC prototypes are tested on.

AquaC EV90

At the time of the picture, this aquarium had been running with an AquaC EV90. Note that this aquarium is fairly heavily stocked. After this picture was taken, quite a bit more livestock has been added to this aquarium. Currently, an AquaC EV150 is running on this well-overstocked tank. AquaC feels that this the EV150 is probably not neccessary for the tank, but they feed their tank quite aggressively to keep all the fishes that has been added healthy and wanted to keep maintenance at a minimum. According to AquaC, maintenance on this aquarium has been extremely low.

The AquaC EV-150 protein skimmer working on our aquairum:

AquaC EV150

Please note the dry consistency and quantity of the foam being collected by the AquaC protein skimmer. This drain cup is being filled on a daily basis. There is a convenient collection cup drain connector that allows you to drain the the waste collected in collection cup into a waste container.

This particular model stands only 20" tall, so it is extremely easy to place this skimmer underneath most aquarium stands. Even the model EV200 fits very easily under most aquarium stands.

The AquaC EV skimmer working in one of our customer`s tank:
AquaC EV Skimmer

Product Manuals & Documentation

AquaC EV-180 Protein Skimmer w/ JG Fitting + Rio 3100 Pump

Owner's Manual available for download in Adobe PDF file format

Manufacturer Info

AquaC Aquarium Supplies
AquaC was founded in 1998 as a small one-man operation in San Diego, California. The company has since grown to become one of the leading protein skimmer manufacturers in the United States and sells thousands of units globally every year. AquaC`s 5,000 square foot production facility in San Diego sets the standard in technology for acrylic fabrication. They use precision CNC machined parts and advanced thermoforming techniques to build products of unmatched quality and value. The company`s focus has remained the same after more than a decade in business: to provide high-quality products and top-notch customer service to customers with each and every transaction.


Manufacturers Warranty (Skimmer): 90 days from date of purchase

33 Reviews



Experience Level: Intermediate

Went back

Hard to keep short. Used many years ago and then went through from all designs to 700.00 german unit. But this design has a few strong pluses. Dedicated pump that has no venturi to take away pump pressure and volume. Auto level that maintains perfect level for performance. My experience with a lot of skimmers was that the throughput was not enough for my 180 reef. Had algae problems with the others and never with this. A lot of build quality and science in this. Very efficient. Never had the problem with it stopping for long periods of time. Actually think it is ahead of its time not even remotely outdated like some think.

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Experience Level: Intermediate

Better with the Sicce 3.5

I had a EV-120 on my 90 gallon tank for many years and upgraded toe the EV-180 when I set up my 150 Gallon tank. I had very limited space in my sump so this was best fit. I was running the EV-180 with a Mag 7 with mediocre results, but recently replaced the Mag 7 pump with a Sicce Syncra 3.5. Now I get more consistent skimming with much darker collection and need to empty cup at least once a day instead of every few days. Pump makes all the difference.

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Experience Level: Intermediate

Best Skimmer on the market!

Purchased the AquaC EV 180 for my 120 reef tank.. 2nd day after installation skimmer was already skimming waste. Looked at multiple Skimmers on the market.. Reading reviews and watching videos told me to buy this skimmer. I'm glad I made that choice.. Now I can finally say I own a EV180.. To me it's like buying Ferrari Of all skimmers! Great product and defiantly recommend rhis skimmer to whoever looking to purchase a skimmer!

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Experience Level: Intermediate


This skimmer works great!

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Experience Level: Intermediate

Shames my other equipment

I am re-activating a 100 gal. tank that I let go dormant for three years. I purchased the AC to replace a less expensive brand that was difficult to regulate. The AquaC started right off, no flooding, very little noise. It is extremely well built and a great concept--no air hose inlets, no air pump, no venturi pump. It began skimming right away and has needed only minor adjustments since starting up. I had to place it outside my sump, but the input pump was hardly effected. Had to raise the unit about 4" so the exit would be above the wall of the sump, no problem.

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Experience Level: Intermediate

Well built

I have been using this for about 2 months now. It runs well and collects a lot of "gunk." I went for the more expensive pump and am very happy. After a ton of problems with my old skimmer and pump this has been a dream. No issues with the pump at all.

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Experience Level: Intermediate

To sensitive!!

I gave this skimmer 2 stars because it is soooo sensitive to anything. Hands in tank, feeding,water level, looking at it cross eyed. It will stop skimming and take almost 2 days to start again. It is built very well and is sturdy.Great if you do not do alot of ajusting in your tank.

3 out of 8 found this review helpful

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Experience Level: Beginner

Excellent product

I have had my skimmer going for about a month on my 150g with a medium bio load. This skimmer rocks! After the break-in period of about 36-48 this thing is rolling. Very easy setup, easy to disassemble and clean. I was running a mag 9.5 on it but seemed like to much so went back to the mag 7 and it works great. I will stress the break-in period also I rinsed my skimmer with warm water before use. It really makes a difference in my water quality. If you have the money do it right the 1st time and get this skimmer.

2 out of 2 found this review helpful

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Experience Level: Intermediate

What I expected.

Needed to fit a tight space and considering that these Skimmers have been touted for their performance for years I expected good results and got them! Skimmate was produced in less than 1/2 day and has improved each day after. Solid construction, good manual, easy to start up, called on the phone to ask a question, terrific support from both AquaC and of course Marine Depot.

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Experience Level: Intermediate

Protein skimmer

I love the skimmer but I made a big mistake getting the Rio 3100 pump. The skimmer works awesome. It is easy to clean and I have had it for 8 months. Need to clean intake holes as they will clog but that is stated in the instructions. Now to the pump------it went dead after only 7 months and guess what...it only has 6 month warranty. Do not buy the Rio!!

3 out of 8 found this review helpful

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