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Diffused Aeration System Design

Our onsite aeration assessment services allow our biologists to measure the dissolved oxygen levels throughout the waterbody to accurately assess your aeration needs. Additionally, our biologists will use these numbers to determine what diffusers to use, placement of the diffusers and your aeration system to strategically improve water quality.

Aquatic Biologists, Inc. strongly believes in customizing each diffused aeration system we install to meet the unique characteristics of the individual waterbody.

Bottom diffused aeration systems are comprised of four components: cd-88-p-aeration-equipment-diffuser-compressor-air-hose-small-rock-cover-decoys-robb-s-scrapbook-.jpg

  1. Diffusers
  2. Air Hose
  3. Compressor(s)
  4. Compressor Cabinet with Cooling Fan

In addition to sales, we also install and service all types of systems in Wisconsin and northern Illinois.

Water Circulators are available where directional flow or winter de-icing is needed.

ABI utilizes the most efficient diffusers on the market!


Aeration is most effective when the air bubbles are very small. Small bubbles increase diffusion of oxygen from the air into the water. More importantly, the rising bubbles circulate the water in the lake or pond. The smaller the bubbles, the more efficient they are at both oxygen diffusion and circulating the water.  We offer three different AquaBio designs that incorporate fine bubble technology and can aerate all pond and lake situations.  Our designs are some of the most efficient on the market.  We are now aerating water with a single 1/4hp compressor when previously 3/4 or even 1hp was needed!

Matching the correct compressor type and size to appropriate diffusers is also important when designing a system.  Rotary vane compressors are used to move larger amounts of air to shallower diffusers (<12ft), rocking piston compressors are used to aerate deeper water (>12ft) where higher air pressures are needed. 


ABI AquaBio Diffuser Series

Maximize Aeration Performance with ABI AquaBio Diffusers. Engineered to outperform all other diffusers, including other membrane diffusers

ABI AquaBio diffusers are designed specifically to maximize aeration efficiency. Diffuser selection is based on "certified" performance standards directly correlated to CFM delivery rates and water depth.

What Makes the AquaBio Series Diffusers Up To 27% More Efficient Than Other Diffusers?

More Surface Area Moves More Water

Less Flow Interference (Areas Blocking Water Movement)

Flow Through Design Moves More Water

Less Back Pressure = Increase CFM Output

Thick Wall Membrane Creates Fine Micro-Bubbles

Less Cleaning

 Made in Wisconsin!




AquaBio Six Shot
AquaBio Ten Shot

Operating Range 0.25-4 cfm

Operating Range: 0.5-6 cfm

(Optimum 1.5-1.6 cfm)

(Optimum 2-2.2 cfm)

AquaBio Diffusers:

  • Maximize Oxygen Transfer and Energy Efficiency
  • Reduce Odors and/or Harmful Gases
  • Lower Pathogenic Bacteria Count
  • Increase Microbial Populations to Further Increase Organic Sediment Reduction
  • Increase Fish Carrying Capacity
  • Create an Unfavorable Growing Environment for Blue-Green Algae
  • Restore Water Quality
  • Bubble Size: 50 - 500 microns


AquaBio Original

Each Aqua Bio diffuser utilizes a specially manufactured Porex tubing to create the formation of fine micro bubbles (50 - 500 microns) in a 360 degree radius around the entire length of tubing. Stainless steel plate allows for extended life and protection of the diffuser tubing while maintaining the diffuser above the soft sediment.

Three year limited warranty.    



AquaAir™ provides ponds and lakes with superior aeration, circulation, and de-stratification. Dissolved oxygen (DO) levels are increased throughout the entire water column with the use of bottom-mounted diffusers. The micro-bubbles entrain bottom water and synergistically lift it to the surface where atmospheric oxygen is absorbed and then transferred throughout the water column.

AquaAir™ aeration systems offer the following lake and pond benefits:

  • Entire water column circulation - up to 4000 gpm depending on diffuser depth
  • Elimination of thermal stratification
  • Increased dissolved oxygen levels that stimulate the natural aerobic digestion process thus reducing nutrient levels and associated algal growth
  • Elimination of oxygen related fish kills and expansion of the oxygenated habitat and ecosystem
  • Reduction of mosquito and aquatic midge infestations
  • Elimination of foul odors from undesirable dissolved gases
  • Reduction of organic bottom sediment
  • 5 Year Warranty on all in-water components



Robust-Aire diffusers create more water flow to aerate your pond. Diffusers are designed to provide a fine air bubble with the least amount of pressure. The base is made of thick HDPE plastic and a locking fill plug allows you to fill it with pea gravel or other weighted substrate.

It has a raised design that keeps the diffusers performing at an optimal level above the pond bottom. A durable, bolted, strain relief attachment ensures that the weighted tubing will not become detached during installation or maintenance. A check valve with Viton seals keeps water from entering the tubing when the system is not operating.kasco-marine-robust-aire-under-water.jpg