AquaC EV-180 Protein Skimmer

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This item has been discontinued.


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

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

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: 90 Days from date of purchase

34 Reviews



Experience Level: Intermediate


I have been using this skimmer for about a year and it is Quiet, skims like crazy and is super Easy to clean. I almost gave up on it because it took a number of weeks to 'break in'. I actually ordered another skimmer to replace it but by the time the new one arrived the AquaC was skimming like mad. The only complaint I have is that there were no handles on the lid of the cup which made it almost impossible to open it with my small lady hands. Almost hurt myself but I remedied this by welding a 4-5 inch piece of 1" PVC pipe on the lid with PVC Glue. This has stayed firm and allows me to open it with ease. I'm disappointed to see that this wonderful skimmer is being discontinued. IMHO it has very few parts to fail and simple design it will probably last forever. So glad I got it.

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Experience Level: Intermediate


Buyer Beware ..I gave up on this skimmer. Does not skim no matter what size pump or intake nozzle they sent me...Don't waste your money The company says nothing in my water to skim. REALLY ?? In 2 months my tank is that clean Give me a break My new skimmer produces scum

9 out of 11 found this review helpful

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Experience Level: Intermediate

aqua c ev 180

Make sure to get a mag 9.5 and call Aqua C for the 1" injector. Give it a few weeks to break in.

2 out of 3 found this review helpful

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Experience Level: Intermediate

No foam

I have been running this skimmer for two months. It virtually does not skim. I have tried a larger pump multiple adjustments with no luck. The manufacturer told me that my medium stocked mixed reef tank must have nothing to skim. In their opinion the unit is fine. To date it has not produced enought skimmer mate to fill the cup. On the up side it's very quiet.

3 out of 4 found this review helpful

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Experience Level: Intermediate

Decent skimmer

This is a decent skimmer for a 150 gallon reef tank. I went with the mag 7 pump, but I suggest going higher than that, unless you are planning to connect it to the skimmer directly. Very inconsistent and took awhile for me to get it adjusted accordingly. There are better skimmers out there for the price. Happy reefing.

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Experience Level: Intermediate

great skimmer

Absolutely one of the most well made skimmers I've seen. It's a solidly constructed item with a simple design that seems to be fairly low maintenance and provides high performance. It takes some time to adjust the skimmer when its being set up but the instructions are clear and easyy to follow. No regrets with this purchase. I was also very pleased with the service I received from Customer Service. I will definitely be ordering from them again.

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Experience Level: Intermediate

a BEAST!!!

I got the EV-180 skimmer as a upgrade for my 50 gal reef tank. It solved my Cyano bacteria problem within a couple of weeks. Every 2-3 days I have to clean it. Its a BEAST!!!

2 out of 2 found this review helpful

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Experience Level: Beginner

Aqua C EV-180

the quality is outstanding & durable.I would recommend the canister collection for convienence.I drilled into the top of the skimmer with a 3/8 pilot point drill bit and ran ozone tubing into the upper cavity and siliconed it in place & operate the Ultralife ozonator 360 w/ 30 gal pump. The collection cap on the cansiter has a place for charcoal fines to help eliminate odor of ozone. This skimmer works wonderful in my 180 gal tank. I would use a stronger pump than the mag 7.

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CARL B from Mineral Ridge, OH UNITED STATE


Experience Level: Intermediate

what i excepted for the money

In the fifteen years of keeping a marine aquarium I have used many different skimmers and the AquaC-180 did what the manufacturer had claimed it would do. Within hours the skimmer was pulling a thin green/brown skim-mate. The only downfall was the kit doesn't come with a hose.

3 out of 3 found this review helpful

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jason from CT


Experience Level: Intermediate


This skimmer is great! I had a skimmer before and it broke, so I went out and got this one. Wow it makes such a diffrence in my aquarium. My tank is very clear and its only been a week. I love this skimmer.

1 out of 1 found this review helpful

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