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After many years of research, we believe aeration to be the foundation for improving and maintaining proper water quality in ponds and lakes. Lake bed aeration acts to increase dissolved oxygen levels while eliminating water stratification.


Industry leading solutions
for good water quality

Oxygen Saturation Technology

Oxygen Saturation Technology

Next Generation Aquatic Aeration System For Large Lakes

Oxygen Saturation Technology (OST) is a state-of-the-art aeration system. The patent pending design dissolves oxygen gas directly into the water and releases it precisely where it is needed most. The OST’s design eliminates bubbles, which eliminates turbulence, sediment resuspension, and undesirable mixing. These systems can maintain dissolved oxygen (DO) levels as high as 20 mg/L directly over and into the sediments, where oxygen
is needed most, providing exceptional water quality not achievable with traditional diffused air/aeration systems. OST can ensure desired DO concentrations are maintained regardless of water depth or climatic events because oxygen is generated directly on-site and qualitatively added to the water. Because of this, OST is the only aeration method that can guarantee a lake will never have an oxygen related fish kill.

Key Benefits

Oxygen Saturation Technology is a modular system that can be custom scaled to fit any size water body

• Dramatically increases oxygen concentrations (>80% saturation)
• Does not disturb sediments or cause unnatural mixing
• Automated runtimes save electrical costs
• Targets issues at the source
• Reduces sediment and HABs
• Preserves thermal stratification
• Submerged to minimize footprint and decrease noise

The Science Behind It

Water quality problems such as muck buildup, harmful algal blooms (HABs), fecal coliform, and odors all have one thing in common, a dissolved oxygen (DO) deficiency referred to as anoxia. Sediment oxygen demand (SOD), from accumulated sediments, is the primary source of oxygen loss and subsequently anoxia in lakes and ponds. Anoxic Sediments are also the source of many water quality issues; sediment accumulation from organic deposition greater than the rate of decomposition results in the release of metals,such as iron (Fe) and manganese (Mn) nutrients like phosphorus which fuel algae growth, and malodors from hydrogen sulfide formation.
Water quality management strategies related to these common problems all focus on adding oxygen. OST is designed to exceed oxygen demands by dissolving oxygen directly into the water via gas dissolution chambers.

OST is designed to dissolve all the oxygen generated from an on-shore compressor into water; therefore, eliminating
and preventing the release of any bubbles. Bubbles rising through the water column induce mixing. Mixing in turn
creates turbulence, which can exacerbate oxygen demands, resuspend sediments, and deteriorate water quality and

This highly efficient technology allows for a precise concentration of oxygen to be maintained continuously because it is automated to turn OFF or ON depending on in-lake oxygen levels. OST blankets the area of accumulated sediments often programmed/automated to maintain DO concentrations as high as 15-20 mg/L. High concentrations of oxygen provide exceptional water quality, not achievable with any other conventional aeration system in the market.

OST is a state-of-the-art technology designed to automatically treat the target problem areas directly when they need it most resulting in substanstial cost savings. Additionally, there is increased cost savings from less need
of other surface-applied products such as algicides.

Kasco Diffused Aeration

Kasco Diffused Aeration

NEW Kasco’s Robust-Aire™ systems are NOW 34% quieter and easier to maintain. Newly redesigned, these systems feature a significant reduction in sound (patent pending), larger air filters on 1/4HP and 1/2HP systems for less frequent cleaning, and a visual maintenance indicator to alert when maintenance is needed.

Robust-Aire™ systems pump compressed air from a shore-mounted compressor through self-weighted lines to a diffuser on the pond, lake or tank bottom. The diffuser then continuously releases micro-bubbles that rise to the surface carrying large volumes of water. This induces oxygen-transfer as well as beneficial water movement and mixing.

All Robust-Aire™ diffused aeration systems are available with an optional remote manifold allowing the compressor to be installed up to a mile away from the water’s edge

Product Features

– Great for depths 2.4 metres and deeper
– No electricity required in the water
– Speeds up organic decomposition
– Designed for continuous operation

– Diffuser: 5 years
– Compressor: 2 years
– Cabinet: 5 years
– Tubing: 10 years

Package Includes
– Diffuser assembly
– SureSink™ self-weighted tubing
– Mounting option
– Compressor(s)

Common Applications

– Backyard ponds & lakes
– Industrial
– Mixing
– Winterkill prevention
– Waterfowl protection


Part Number Cabinet Number of Diffusers Voltage Compressor
RAE1-NCNo Cabinet1220(1) 1/4HP
RAE2-NCNo Cabinet2220(1) 1/2HP
RAE3-NCNo Cabinet3220(1) 1/2HP
RAE4-NCNo Cabinet4220(2) 1/2HP
RAE5-NCNo Cabinet5220(2) 1/2HP
RAE6-NCNo Cabinet6220(2) 1/2HP
RAE1-PMPost Mount Cabinet1220(1) 1/4HP
RAE2-PMPost Mount Cabinet2220(1) 1/2HP
RAE3-PMPost Mount Cabinet3220(1) 1/2HP
RAE1Base Mount Cabinet1220(1) 1/4HP
RAE2Base Mount Cabinet2220(1) 1/2HP
RAE3Base Mount Cabinet3220(1) 1/2HP
RAE4Base Mount Cabinet4220(2) 1/2HP
RAE5Base Mount Cabinet5220(2) 1/2HP
RAE6Base Mount Cabinet6220(2) 1/2HP





Kasco-Robust Aire-Surface

Kasco-Robust Aire-Winter

Kasco-Robust Aire-Winter (1)











Kasco Surface Aerators

Kasco Surface Aerators

Kasco Surface Aerators are the clear market leaders, with more installations than any other manufacturer. Independent testing at Auburn University found that Kasco’s aerators’ SAE (Standard Aeration Efficiency) is up to 3.0 lbs of oxygen per horsepower per hour of operation, making them some of the most efficient and effective units available.

Kasco Surface Aerators dramatically agitate high volumes of water at the surface, maximizing air and water exposure to create valuable gas exchange. Surface Aerators are your best choice for aeration when a decorative fountain pattern is neither necessary nor desired.

Kasco Surface aerators

High performance surface aerators dramatically push high volumes of water into the air. This process increases the overall health of your water and keeps it thoroughly mixed. These self-contained units deliver up to 3.0 lbs of O2 per horsepower per hour of operation, making Kasco surface aerators the most dependable and efficient units on the market.

Product Features

– Proven performance for continuous, supplemental or emergency use
– 1/2, 3/4 and 1HP sizes can easily by moved and installed by 1 person
– ETL listed as complete package to UL and CSA safety standards
– Power cords can be protected with a flex sleeve cord protector
– 2 year warranty on 1/2, 3/4 and 1HP
– 3 year warranty on 2, 3HP and 5HP

Package Includes
– Float and mounting hardware
– Optional bottom screen and hardware
– Optional lighting package
– Control panels are optional for all single phase units
– Control panels are included for three phase units except “U” models

Surface Aerator 50Hz Units

50Hz ModelsSize (HP)PhaseVoltageAmpsMinimum Depth (cm)


Various Sizes

Kasco-Surface Aerators-5HP

Kasco-Surface Aerator-3.1HP

Kasco-Surface Aerator-5.1HP

Kasco-Surface Aerator-2400 (2)

Kasco-Surface Aerator-3.3HP


Common Applications

– Commercial aquaculture
– Residential ponds and lakes
– Retention ponds
– Leachate ponds
– Industrial lagoons
– Marina entrance and navigation



Bubble Tubing Aeration

Bubble Tubing Aeration

Fine bubble diffusers such as our Bubble Tubing® produce many tiny air bubbles (less than 1 mm in diameter). Tiny bubbles rise steadily from the floor of a wastewater treatment basin or the bottom of waterways and canals, ponds, lakes or lagoons. These bubbles provide substantial and efficient mass transfer of oxygen into the water. This oxygen, combined with the food source, sewage or sediment, allows naturally occurring bacteria to produce enzymes.  Enzymes help break down waste or sediment made of accumulated organic matter.

Fine Bubble Technology at work

The size of the bubble matters greatly for the application as we have noticed in our work. The fine bubbles (microbubbles) are critical for achieving precise results whether oxygenating a wastewater treatment plant, using aeration to biologically remove excess nutrients, or using aeration for fluid mixing.  Air bubble curtains applications that rely more on mixing and moving water also benefit from billions upon billions of microbubbles produced by Bubble Tubing®. Not only do bubbles transfer oxygen and decontaminate water by oxidation, but they also move and mix, clarify, and de-stratify water. Thus the same technology has many diverse applications.

Bubble Tubing® optimises oxygen transfer and lifts water which aids in total circulation throughout the water column.  As it functions without moving parts or electricity in the water, it increases performance efficiency while significantly reducing electrical and maintenance costs in comparison to other aeration systems.  This tubing, made of highly resistant yet flexible PVC, is non-kinking and holds no memory when deployed.

Features of Bubble Tubing®

  • Bubble Tubing® is flexible, it holds no memory and will not kink, is easy to install and is safe for the environment (does not contain lead).
  • Made exclusively in Canada to our exact specifications, impressive 5-year warranty.
  • High oxygen transfer rate. A full evaluation of the oxygen transfer capabilities by independent firm available.
  • Applications range from farm ponds to the largest industrial projects.
  • Suitable for fresh and saltwater applications, from shallow to deep waters.
  • Inner pressure prevents clogging; tubing is low maintenance, anti-fouling.
  • No moving parts or electricity in the water.
  • Highly resistant PVC (chemicals, salinity, temperature).
  • Weighted and non-weighted formats available.
  • Tubing can be purchased with all the necessary hardware, ready to be installed.

Operations: How does Bubble Tubing® work?

Compressed air enters the tubing creating an inner pressure. It is released through the perforations thanks to the precision holes found along both sides of the entire length of tubing.   The ensuing micro-bubbles are efficient in preventing clogging and fouling (typically found in porous diffusers), of the entire length of tubing.  They form a bubble curtain of uniform and evenly dispersed fine bubbles.

CanadianAir™ System Plan witn Bubble Tubing® fine bubble diffuser

No matter the scale of operations the same basic principle applies: A compressor’s heat hose is attached to the airline delivery hose which itself is connected to the Bubble Tubing® equipped with a check valve. The compressor pushes the air through both the feeder hose and the diffuser tubing that releases the air uniformly into the water.

We offer all the necessary products from start to finish, to fully set-up a reliable and efficient aeration system for you. We can size the compressor for the application, suggest tubing layout, suggest cost effective design modifications, and offer to troubleshoot. Our experience designing aeration and deicing systems with Bubble Tubing® is substantial, and our expertise is sought for many aeration projects.

Silt Barrier and turbidity curtains to contain sediments in suspension

Bubble curtains also meet the requirement for containing silt and turbidity for in-situ work where sediment containment barriers are mandatory. When operating in a stream, river or lake, marine construction and dredging companies are required to install a physical curtain called a floating turbidity barrier.lick on picture to enlarge

These obstacles do not allow free passage for boats and work equipment. Whereas a bubble curtain does both: it allows movement of boats and equipment over the barrier while retaining sediment and other suspended matter. In this case, a bubble curtain installed from the stream, river or lake bed will mitigate the migration of silt and other suspended sediments through the water column.

Our Bubble Tubing® has proven to be very useful as a silt barrier and turbidity curtain during these applications. Also, in this article, research is currently underway to validate the effectiveness of bubble curtains in altering stream dynamics. Water currents in the outer curves of riverbeds are slower allowing for sediment deposition and accumulation.  Over time, a sand bank can be created, making shipping impossible without dredging under certain circumstances. By installing a bubble curtain in this outer curve, this creates a sufficient current to prevent sediment buildup.

These are a few of the applications for Bubble Curtains. We look forward to working closely with engineers, scientists and water managers to find bubble curtain applications to protect wildlife and the environment so projects can move forward in an environmentally responsible manner.

Who may need to create a bubble barrier?

Bubble Tubing® comes in different sizes and format. Custom request also available

Demand for bubble curtains is booming. Who are our customers:

  • Port authorities
  • Shipbuilding companies
  • Acoustic reduction specialists
  • Environmental firms
  • Hotel chains
  • Oil platform managers
  • Companies specialising in dredging
  • Marine construction companies
  • Hydroelectric dam managers
  • Companies specialising in fish barriers
  • Naval bases
  • Environmental engineering firms
  • Cities to recover waste in canals and rivers
  • Floating waste recovery companies
  • Environmental groups and citizen associations



Kasco Circulators

Kasco Circulators

By creating a strong, directional flow of water, Kasco circulators help to solve many common aquatic issues. This continuous water movement helps to eliminate stagnant areas, remove debris and increase oxygen transfer. These units are designed and built to perform year-round in a variety of applications from lake front property to harsh saltwater environments, making them the most reliable, and versatile on the market.

Depending on pond bottom, at least 60 cm. of operating depth is recommended

Product Features

– ETL listed as complete package to UL and CSA safety standards
– Low maintenance for dependability and ease of use
– 2 year limited warranty

Package Includes
– Horizontal float (additional mounting options available)
– Mooring lines
– Optional control panel

Common Solutions

– Remove unwanted floating debris
– Potentially control mosquitoes
– Reduce odors by continuously moving water
– Break up thermal stratification
– Mix chemicals in tanks and other industrial settings
– Prevent fish ills and ice damage to docks and piers

Horizontal Float Packages

Part NumberHPVoltagePhaseThrust (lbs)





Kasco-Circulator-Horizontal Float-3400CF


Kasco-Industrial Mount

Kasco-Universal Mount-New

Kasco-Universal Mount-New-Grass

Universal Mount Packages

Part NumberHPVoltagePhaseThrust (lbs)