Kasco Surface Aerator

Why Choose This Surface Aerator for Pond and Wastewater Treatment? If you own a pond or lake, the water is working against you every single day. Without adequate dissolved oxygen, algae takes over, fish suffocate, muck builds up on the bottom, and a smell develops that can ruin the enjoyment of your property. These problems share a single root cause: stagnant, stratified, oxygen-starved water. No amount of chemicals, dyes, or treatments will fix it permanently because they address the symptoms rather than the cause. A Kasco Surface Aerator attacks the problem at its source by continuously pulling water from 360 degrees around and below the unit, thrusting it into the air, and returning it to the pond fully oxygenated and thoroughly mixed. Kasco's own case study proved that a single unit raised dissolved oxygen levels across an entire 800,000-gallon pond in approximately 8 hours, fast enough to stop a fish kill in progress. Whether you are managing a backyard pond, a fishing lake, a retention pond, or a commercial aquaculture operation, this is the piece of equipment that makes everything else you do for your water actually work. Raises dissolved oxygen levels and stops fish kills in their tracks: A real-world Kasco case study showed measurable D.O. improvement across an entire 800,000-gallon pond within approximately 8 hours of turning the unit on Delivers the highest oxygen transfer rate in its class: These self-contained units transfer up to 3.0 lbs of oxygen per horsepower per hour of operation Breaks up thermal stratification so the entire water column benefits, not just the surface: Water is pulled from 360 degrees around and below the unit, thrust into the air, and returned to the pond thoroughly mixed from top to bottom Eliminates foul pond odors caused by stagnant, oxygen-depleted water: Continuous oxygen introduction and water movement removes the anaerobic conditions responsible for rotten-egg and swamp smells Discourages algae blooms without chemicals: Keeping the water oxygenated and moving creates conditions that are hostile to the runaway algae and nuisance vegetation that thrive in stagnant ponds Reduces mosquito and leech activity around your pond: Adequate dissolved oxygen levels discourage the conditions that nuisance insects require to breed and thrive Runs continuously as a workhorse aerator, not just on demand: Engineered and proven for continuous duty operation on fish farms, aquaculture facilities, and recreational water features alike Scales to any pond size from a backyard feature up to a commercial lagoon: Available in six motor sizes from half HP to 5 HP covering a wide range of applications including retention ponds, leachate ponds, industrial lagoons, and marina entrances Operates in shallow water that rules out other aerators: The half HP and three-quarter HP models require a minimum depth of just 17.5 inches, the 1 HP requires 19 inches, and the 2 HP requires 20 inches The smaller units install and move without heavy equipment or a crew: The half, three-quarter, and 1 HP sizes can be installed and repositioned by one person Power cord reaches far from shore without an electrician: Cord lengths available from 50 feet up to 500 feet depending on model and voltage, with optional flex sleeve cord protector to guard against abrasion Handles fluctuating water levels without repositioning: Floating design rises and falls with the water automatically, with an alternate anchoring method available for ponds with significant level changes Protects itself from corrosion in saltwater and brackish water: Stainless steel components throughout and a sacrificial zinc anode on the shaft guard against electrolytic corrosion in harsh environments Motor housing stays clean and efficient with minimal effort: Annual power washing of the stainless steel motor housing removes algae and calcium buildup that would otherwise block heat transfer and cause overheating Seals and oil replacement extends motor life well beyond the warranty period: Replacing the seals and changing the oil after three years prevents more expensive motor repairs, particularly in warmer climates where the unit runs year round Built-in thermal overload protection prevents motor damage from overheating: The motor automatically shuts off if it runs too hot and restarts once it cools down, protecting the unit even when no one is watching Protects the motor from electrical faults: ETL Listed as a complete package to UL and CSA safety standards, with GFCI protection required and built into optional control panels Control panels allow automated scheduling from shore: Optional control panels allow timing and lighting to be managed remotely without going to the water Compatible with WaterGlow LED lighting kits for evening display: LED lighting packages attach separately to illuminate the aerating spray after dark Can be paired with Pond Probiotics for compounding water quality results: Kasco recommends combining surface aeration with their beneficial bacteria treatments for maximum pond health improvement Available with NSF certification for sensitive or regulated applications: The 2 HP and 5 HP units are available with NSF certification for municipal and industrial use Backed by a manufacturer warranty with an optional extended coverage upgrade: 2 years on the half through 1 HP units, 3 years on the 2 through 5 HP units, with an optional 5-year warranty available on larger models Supported by a company with over 55 years in water management: Kasco Marine has been manufacturing water management equipment since 1968 and maintains a nationwide network of authorized repair centers What's Included Motor unit Power cord Float and mounting hardware Optional bottom screen and hardware Control panels are optional for all single phase units Control panels are included for three phase units except “U” models Kasco Surface Aerator Technical Specifications Model 1/2 HP 2400AF 3/4 HP 3400AF 1 HP 4400AF 2 HP 8400AF 3 HP 3.1AF 5 HP 5.1AF Unit + Pattern Dimensions 24" H x 48" W 24" H x 48" W 30" H x 50" W 44" H x 98" W 50" H x 130" W 60" H x 148" W Motor Size 1/2 HP 3/4 HP 1 HP 2 HP 3 HP 5 HP RPM 1750 RPM 1750 RPM 1750 RPM 1750 RPM 1750 RPM 1750 RPM Pond Size Up to 1/2 Acre Up to 3/4 Acre Up to 1 Acre Up to 2 Acres Up to 3 Acres Up to 5 Acres Minimum Pond Depth 15 inches 17.5 inches 19 inches 20 inches 24 inches 26 inches Voltage 120V 120V or 240V 120V or 240V 240V 240V 230V Running Amps 5.7 7 or 3.5 9.1 or 4.5 9 10.7 18 Wattage 656 Watts 805 Watts 1047 Watts 2070 Watts 2461 Watts 4140 Watts Power Cord Lengths 50', 100', 150', 200' 50', 100', 150', 200', 250', 300', 400' 50', 100', 150', 200', 250', 300', 400' 50', 100', 150', 200', 250', 300', 400' 50', 100', 150', 200', 250', 300', 400' 100', 150', 200', 250', 300', 400' Mooring Ropes Three 50' braided nylon mooring ropes Three 50' braided nylon mooring ropes Three 50' braided nylon mooring ropes Three 50' braided nylon mooring ropes Three 50' braided nylon mooring ropes Three 50' braided nylon mooring ropes Float Included Included Included Included Included Included Bottom Screen Optional Optional Optional Optional Optional Optional Optional Light Kits Kasco Light Kits Kasco Light Kits Kasco Light Kits Kasco Light Kits Kasco Light Kits Kasco Light Kits Optional Control Panel C-25 C-25 or C-220 C-25 or C-220 C-220 C-230 C-230 Warranty 2-Year 2-Year 2-Year 3-Year 3-Year 3-Year Manuals Kasco Surface Aerator Flyer 2026 Kasco Surface Aerator 2-5HP Manual Kasco Surface Aerator 2400-4400 Manual