Robust Aire Diffused Aeration

Pond or Lake Aeration Systems |Easy to install, maintain |Low operating costs |Fully customizable

Robust Aire Specs  Robust Aire Brochure   Diffuser Assembly Instructions   Robust Manual Instructions   Short Install Video

  1. Click on the Sizing Chart  for standard applications.

  2. Determine the right size kit, choose with or without a protective weather proof cabinet.

  3. Note: these systems can be customized for just about any application. For applications where power may be 100’s or even 1000’s of feet away, we will help design a custom system that can be installed by the customer?  Tell us as much information about your pond and location by completing this online Pond Survey and we’ll work up a proposal for free.

Robust Aire Diffusers


Robust Aire Diffusers are anywhere from 10-40% more efficient than other aeration products on the market. The base is made of durable High-density plastic. The locking fill cap plug is removed, and the base is filled with pea gravel, sand, or similar weighted material. A check valve with Viton seals keeps water from entering the tubing when the system is not operating.

There are several options for the different packages. Cabinet and No Cabinet options for each package.

Mount your Robust-Aire Diffuser system how it best fits your needs. Kasco’s diffuser systems work in countless applications, so it's designed with three distinct mounting methods giving you complete flexibility over your design and installation. Choose from the base mount cabinet, the post mount cabinet or the no cabinet option.

Base Mount Cabinet



  • Can operate 1-6 diffusers
  • 24 in. x 18 in. 20 in.
  • Great choice if compressor can be on the ground with access to ventilation from below
  • 120 volt receptacle or a 240 volt junction box
  • two cooling fans provide 110 CFM ventilation each
  • 6 ft. power cord from cabinet
  • Powder-coated aluminum for increased durability
  • Compressors are mounted at the factory
  • Acoustical foam included in cabinet to reduce noise levels
  • Cabinet includes keyed lock
  • Nature-green color blends well with outdoor surroundings
  • Note: Place on flat surface to allow ventilation from underneath

Post Mount Cabinet



  • Can operate 1-3 diffusers
  • 19 in. x 12 in. x 12 in.
  • Great choice if compressor needs to be off the ground
  • 120 volt receptacle or a 240 volt junction box
  • Single cooling fan provides 110 CFM of ventilation
  • 6 ft. power cord from cabinet
  • Power-coated aluminum features increased durability
  • Compressor is mounted at the factory
  • Acoustical foam included in cabinet to reduce noise levels
  • Cabinet includes a keyed lock for added safety
  • Nature-green color blends well with outdoor surroundings
  • Note: Mount on wall or wooden post (post not included) 

No Cabinet



  • Cooling fan and universal mounting platform included
  • Allows for easy compressor maintenance
  • 6 ft. power cord from compressor
  • Mount brackets allow for easy installation
  • Must be protected from weather
  • Must still allow for adequate ventilation
  • Least cost option
  • Note: Great flexibility, used in unique applications 



Robust Aire Systems

NOTE: RA1-RA3 Standard Kits Ship UPS Ground | RA4-RA6 Standard Kits Ship Motor Freight | Ships with in 24-48hours | Delivered 3-5 business days

Why Use a Kasco Robust Aire System?

• Better Water Quality • Bigger & Healthier Fish • Eliminate or Reduce Odors • Reduce Undesirable Algae  • The most efficient Pond Aerator Lake Bottom Aeration system on the market 

Advantages Of Using A Kasco Marine Robust Aire System

  • No electricity in the water. This can be especially important where swimming is allowed.
  • No floating equipment at the surface. Boating is not hindered and the natural view of the lake can be enjoyed.
  • No electricity needed at the edge of the pond or lake. Robust-Aire can be remotely installed away from the water’s edge. Air can be delivered to the water’s edge instead of electricity. This can result in an installation cost savings. This option may be preferred where it is more convenient to have the compressor system consolidated with other equipment.
  • The Kasco Marine Robust-Aire Diffuser is more effective at aerating deeper waters than a floating fountain or high-volume surface aerator. Robust-Aire becomes effective at 8 feet of depth and increases efficiency with respect to water flow at the water deepens. Water is pumped directly from the bottom, all the way to the top. Robust-Aire compressors can inject air 50 feet deep!
  • The Kasco Marine Robust-Aire Aeration System is cost effective to purchase and operate for larger surface areas. These systems can effectively destratify and aerate deep lakes with much lower equipment costs and energy consumption. Robust-Aire systems are the most efficient on the market.
  • Low maintenance. Most maintenance and inspection may be conducted on shore. Rocking piston compressors do not require internal maintenance as often as other compressors.

 Aeration BubblingAeration is key to predictable performance from your pond. Your pond environment receives life-supporting oxygen from the atmosphere at the surface where the air and water contact each other, as well as from the photosynthesis of algae and plants below the water surface.These processes are both affected by weather: available wind energy (wave action) and sunlight.

 Weather is unpredictable and that can create stagnant water and low oxygen levels. When there is no sunlight, there is no photosynthesis to create oxygen. In stagnant water, there is no physical energy to help the water and air exchange gases and water forms well defined layers of different temperatures. Poor environmental conditions in the pond for fish and other organisms are the result.

Robust aire Bubbling

 Aeration dramatically improves environmental conditions in your pond and helps keep good water quality predictable. Beneficial bacteria reduce sludge and nutrients, and there are reduced incidences of undesirable algae and odors. Winter ice is not allowed to seal the pond surface and restrict oxygen and gas transfer.

 Aeration allows your fish to thrive in an optimal environment and fish populations experience improved growth rates and vigor.Robust-Aire diffused air systems provide deep water aeration for ponds and lakes. Diffused aeration is an effective method of aeration for ponds with depths greater than 8 feet. By using compressed air injected directly into the bottom of pond, a continuous flow of water is moved upward and thousands of gallons of water are mixed with little expended energy. A Robust-Aire™ energy efficient compressor injects air to the bottom of your pond with weighted, SureSink™ air line and into the Robust-Aire diffuser assembly. The diffuser breaks up the air into micro bubbles which rise to the surface. The rising of the air bubbles creates current which transfers low-oxygen water to the surface, allows it to contact the atmosphere, and breathe. Temperature layers are disrupted and fish can inhabit the entire water column. Oxygen levels increase and harmful gases in the pond water are expelled. There is no disruption of the serenity of your pond setting, just the assurance that it is getting the oxygen that it needs.

 Aerial Mapping PhotoCustom Design Assistance Is your situation unique? With combinations of systems, we can provide a design for almost any lake. Custom design assistance is available including a system layout on an aerial map of your pond or lake. To request a custom designed Robust-Aire system. Click here for a free proposal Request.



   Deicing with AerationRobust-Aire Systems Get Result! Robust-Aire system resulted in a beautifully balanced lake with vigorous fish populations and less required maintenance. Take a moment and view how Robust-Aire transformed a 12 acre lake at Duck Valley.

Click here for independent study results….

 "The day after the system was turned on, phosphorus levels on the bottom were decreased and the pond was chemically and thermally destratified." - Gordon Gotch, Assistant Biologist, Mac McGraw Wildlife 

"The New Kasco RA unit was installed successfully at St. Francis Hospital. I believe this new bottom aeration unit will outperform every other bottom aeration unit on the market today based on price, quality, and ease of installation. I especially like the new diffuser head and small weighted air tubing!" - Installer in SC

Why should you choose the Kasco Marine Robust-Aire Diffused aeration system?

Superior performance, thoughtful design, and professional assistance from an industry leader. That is why so many pond owners and water management professionals are choosing Robust-Aire.

See these short videos for Robust aire.

Why Aeration is important