Scott Aerator DA-20 1 HP Pond Aerator 230V – Floating Lake Aeration System for Water Quality & Algae Control
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Description
The Scott Aerator DA-20 1 HP Display Aerator moves 500 gallons of water per minute in a trumpet-shaped cascading spray pattern approximately 7 feet tall and 25 feet wide. Designed for ponds up to 1 acre, the DA-20 1 HP delivers functional high-volume aeration with a strong visual presence. The oil-free stainless steel motor draws 8.2 amps at 230V (1,210W), runs 24/7 without maintenance, and is backed by Scott Aerator's unconditional 5-year motor warranty. Saltwater approved. Engineered for year-round use — leave it in the water through winter.
What's Included — DA-20 1 HP Standard Kit
Aerator Assembly
- DA-20 Display Aerator — 1 HP, 230V, oil-free stainless steel motor
- Heavy-duty float platform
- Stainless steel filter basket (debris screen)
- Pre-installed aeration propeller
- 3 self-tapping screws
Power Cord
- 230V submersible power cord, 12-gauge
- Plug included — connects to dedicated 15-amp GFCI circuit
- Cord length: typically 200 ft
Documentation
- Installation and operator manual
- 5-year unconditional motor warranty card
Required — Not Included
- Two nylon mooring ropes (purchaser to supply)
- Two 35-lb anchoring weights or concrete blocks (purchaser to supply)
- Dedicated 15-amp GFCI circuit (electrical installation)
- LED lighting kits — optional, order separately
Technical Specifications
| Specification | Detail |
|---|---|
| SKU | 14025 |
| Horsepower | 1 HP |
| Voltage | 230V (also available in 115V — call to order) |
| Amperage | 8.2 amps at 230V |
| Power Consumption | 1,210 Watts at 230V (1,090W at 115V) |
| Motor Speed | 3,450 RPM |
| Frequency | 60 Hz, single-phase |
| Flow Rate | 500 GPM (30,000 GPH) |
| Spray Pattern | Trumpet-shaped cascading spray — approx. 7 ft tall × 25 ft wide (adjustable) |
| Minimum Pond Depth | 36 inches |
| Coverage | 1/8 acre minimum — up to 1 acre ideal |
| Cord | 12-gauge submersible — confirm length for SKU 14025 (typically 200 ft) |
| Motor Type | Oil-free, stainless steel, submersible — no maintenance |
| Warranty | 5-year unconditional motor warranty |
| Certifications | ARL-tested and approved — UL and National Electric Code compliant |
| Saltwater Approved | Yes |
| Winter Operation | Year-round — no winterizing required; leave in water |
| Country of Origin | Made in USA — Spring Lake, Michigan |
DA-20 Series — HP Comparison
| Model | HP | GPM | Spray | Depth | Coverage | Voltage |
|---|---|---|---|---|---|---|
| DA-20 1/3 HP | 1/3 | 300 GPM | 5'×18' | 32" | ½ acre | 115/230V |
| DA-20 1/2 HP | 1/2 | 400 GPM | 6.5'×22' | 32" | 1 acre | 115/230V |
| DA-20 3/4 HP | 3/4 | 450 GPM | 6.8'×25' | 36" | 1 acre | 115/230V |
| DA-20 1 HP ← | 1 | 500 GPM | 7'×25' | 36" | 1 acre | 115/230V |
| DA-20 1.5 HP | 1.5 | 600 GPM | 10'×25' | 38" | 1.5 acres | 230V only |
| DA-20 2 HP | 2 | 700 GPM | 11'×26' | 42" | 2 acres | 230V only |
| DA-20 3 HP | 3 | 800 GPM | 11'×32' | 42" | 3 acres | 230V only |
Need help sizing for your pond? Call or text — we size aerators for free: (765) 508-4352.
Why the DA-20 1 HP?
- 500 GPM means the entire volume of a 1-acre pond cycles through approximately every 6 hours. A typical 1-acre pond at 6 feet average depth holds roughly 1.95 million gallons — so 500 GPM cycling creates meaningful daily water movement without requiring multiple units. More practically, 500 GPM at the surface creates the visible circulation ring that pushes surface algae toward the aerator intake, where the physical agitation disrupts algae cell membranes and oxygenated conditions suppress aerobic bacterial growth. Most pond owners with algae problems on 3/4 to 1-acre ponds see measurable improvement in the first 2–4 weeks of continuous operation.
- The 1 HP sits at the top of the 115V/230V dual-voltage range. The 1 HP DA-20 is available in both 115V and 230V. At 1.5 HP and above, only 230V is available — the 1 HP is the largest DA-20 that still offers the 115V option for installations where a 230V circuit is unavailable. If your electrical panel has open 20-amp 115V circuits but no 230V, the 1 HP is your ceiling for Scott Aerator DA-20 without electrical panel work. The 230V version draws 8.2 amps vs. approximately 11.5 amps at 115V — the 230V version is always preferred for long cord runs to minimize voltage drop.
- The 7 ft × 25 ft spray pattern is the DA-20's widest at this height. The 3/4 HP and 1 HP both produce a 25 ft wide pattern, but the 1 HP spray is taller (7 ft vs. 6.8 ft) with more water volume moving through the air at any given moment. The additional height increases water-to-air exposure time, which directly increases oxygen transfer per gallon. For ponds with persistent dissolved oxygen deficits despite adequate circulation, the height increase from 3/4 HP to 1 HP often makes the meaningful difference.
- 5-year unconditional warranty — the longest standard coverage in surface aerator class. Scott Aerator's warranty is unconditional — it applies regardless of runtime hours, whether the unit is run 24/7, whether it freezes into the pond in winter, or how many years it has been in continuous operation since purchase. The DA-20 is engineered for continuous duty from day one, and Scott Aerator's warranty reflects that design commitment for five full years.
Frequently Asked Questions
How much water does the 1 HP DA-20 move per minute?
The 1 HP DA-20 moves 500 gallons of water per minute (30,000 gallons per hour) in a trumpet-shaped cascading spray pattern approximately 7 feet tall and 25 feet wide (adjustable in width). This is a Display Aerator — it has both functional aeration performance and a visible spray display. It is rated for ponds up to 1 acre in size.
Why is the 230V version recommended for the 1 HP model?
The 230V configuration draws 8.2 amps, consuming approximately 1,210 watts. The 115V version of the same 1 HP unit draws approximately 11.5 amps for the same power output. Running 230V over a long cord (100–200 ft) produces significantly less voltage drop than 115V because voltage drop scales with current: halving the voltage doubles the current for the same power, and higher current means more resistive loss in the wire. For any installation using a cord longer than 70 ft, 230V is the correct choice for maintaining adequate motor voltage at the unit. A dedicated 15-amp GFCI circuit at 230V is required.
What is the minimum pond depth for the 1 HP DA-20?
The 1 HP DA-20 requires a minimum pond depth of 36 inches. This ensures the motor stays fully submerged for cooling and provides clearance to prevent the intake from pulling up bottom silt. For ponds shallower than 36 inches in the intended installation area, contact Scott Aerator about the Shallow Water Adapter accessory: (765) 508-4352.
Are mooring ropes and anchoring weights included?
No — mooring ropes and anchoring weights are not included and must be purchased separately. Two nylon mooring ropes and two 35-lb anchoring weights (or concrete blocks) are required. These anchor the aerator in position against wind and current. Scott Aerator sells compatible mooring line; concrete blocks can be sourced locally. Call us for setup guidance specific to your pond: (765) 508-4352.
How does the DA-20 improve water quality and reduce algae?
The DA-20 attacks the root cause of algae and muck: dissolved oxygen deficit. By moving 500 GPM through the air and back into the water, the DA-20 dramatically increases dissolved oxygen at the pond surface. Higher oxygen levels accelerate aerobic bacteria that decompose bottom muck, suppress algae growth (many algae species thrive in low-oxygen conditions), and release toxic gases like methane and hydrogen sulfide. Physical surface agitation also disrupts algae rafts mechanically. Most pond owners with algae problems on ponds up to 1 acre see measurable improvement within 2–4 weeks of continuous operation.
Does the DA-20 need to be removed in winter?
No removal required. The DA-20 is engineered for year-round operation. When winter arrives, disconnect power at the circuit breaker and leave the unit in the water. All components tolerate sub-zero freezing without damage. Many owners run the 1 HP model continuously through winter as a de-icer — the 500 GPM water movement prevents ice formation around docks, boathouses, and near the aerator, protecting shoreline infrastructure from ice-jacking damage. Restore power in spring after the ice thaws.
Why Buy From Pond Pro Direct?
- Authorized Scott Aerator dealer — 5-year unconditional motor warranty fully supported.
- Full DA-20 HP range available — 1/3 HP through 3 HP, 115V and 230V configurations, cord length options. Call to compare: (765) 508-4352.
- Free aerator sizing consultation — we'll confirm the right HP for your pond acreage, depth, and water quality goals.
- Price Match Guarantee — beat any lower authorized dealer price by $50 on orders over $2,000.
- Free nationwide shipping. 30-day return period. Call or text (765) 508-4352, Mon–Fri 9 AM–5 PM EST.
Scott Aerator DA-20 1 HP Display Aerator (SKU 14025): 500 GPM, trumpet-shaped spray 7 ft tall × 25 ft wide, 230V 8.2-amp oil-free stainless motor (1,210W), 36" minimum depth, up to 1 acre, year-round operation, no winterizing required. Unconditional 5-year motor warranty. Made in USA — Spring Lake, Michigan. Note: mooring ropes and 35-lb anchoring weights required and sold separately. LED lighting kits optional.
Need help choosing between the 3/4 HP, 1 HP, and 1.5 HP? Prefer 115V over 230V? Call or text (765) 508-4352 — Monday through Friday, 9 AM to 5 PM EST.
Price Match
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