Otterbine Fractional Series 1/2 HP Floating Pond Fountain

Otterbine Fractional Series 1/2 HP Floating Fountain

The Otterbine Fractional Series Floating Fountain offers a 5 Systems in 1! Including four spray patterns and a horizontal mixer, this unit is extremely versatile and is ideal for small pond owners who are looking for aeration, aesthetics or simply to circulate water. The Fractional Series Fountain is ready to install out of the box.

This floating fountain is perfect for ponds up to 1/2 acre!

Pond fountain features include: 

  • Cost Effective:  
    Smaller horsepower systems consume less energy offering significant cost savings.
  • Provides Natural & Effective Water Quality Solutions: 
    Introduces oxygen into the water column for the most natural solution to water quality management, effectively controlling algae, aquatic weeds, and foul odors while creating impressive displays.
  • Shallow Operating Depth: 
    Operates in as little as 16in or 41cm.
  • Corrosion Resistant: 
    Stainless steel and thermoplastic components makes it suitable for brackish and effluent conditions.
  • Proven Performance: 
    Otterbine is the only manufacturer to have oxygen transfer and pumping rates independently tested and published on their aeration systems.
  • Comprehensive Warranty: 
    All-inclusive 2-year warranty on unit, cable and power control center*.
  • Complete Package: 
    Includes assembled unit (ships as Gemini,) components for all 5 systems, debris screen, and mini power control panel* with timer and gfci.
  • Safety Listed & Protected:  
    Package electrically safety tested and listed with ETL, ETL-C conforming to UL standards. 



High Volume




Spray Height (ft) 4 2 Upper: 10.6
Lower: 3.8
10.6 n/a
Spray Diameter (ft) 4.5 2.5 Upper: 4
Lower: 10.6
3 n/a
GPM 506 435 195 179 n/a*
Oxygen Transfer (lb/HP/hr) 2.2 2 0.8 0.8 n/a

Fountain Unit & Float Construction

The 1/2 HP Fractional Aerating Fountain & Mixer Series, as with all Otterbine products has been designed and engineered for high quality and ease of use.

  • Corrosion Resistant Materials: 
    All components are manufactured of stainless steel with minimal plastic components for use in brackish water environments.
  • Easy Handling: 
    Small and lightweight allows for ease of maneuverability, with recessed pockets to allow for quick ‘snap-in’ assembly of lights. (Lights sold separately.)
  • Adjustable Patterns: 
    Easily change patterns from Gemini, High Volume, Rocket, Phoenix or convert it to a horizontal Mixer in less than ten minutes.
  1. Includes corrosion resistant adjustable spray impellers/patterns to produce 4 spray patterns, and a horizontal mixer.
  2. Rugged low visibility foam filled polyethlene black float with recessed light pockets.
  3. Oil cooled, efficient 3450RPM (60Hz) or 2750RPM (50Hz) custom built motor incorporates a silicon carbide single seal to ensure dependability and long life.
  4. Corrosion resistant, durable 18 gauge/316 grade stainless steel motor housing.
  5. S/S brackets allow for easy conversion between aerating fountain patterns and mixer model.
  6. Adustable discharge angle +/- 8 degrees. [Mixer model only]

Complete package is safety tested, approved and listed with ETL and ETL-C.  Products for the European Union are also safety tested, approved and carry  a 3rd party, independent CE mark. Minimum operating depth for 16in or 40cm.

Pond Fountain Warranty

The 1/2HP Fractional Aerating Fountain & Mixer Series carries an all inclusive 2 year warranty. This warranty extends to the complete package including the unit, cable and power control center.

Warranty and service can be performed by more than 100 factory trained and certified Otterbine Service Centers found worldwide, or by Otterbine directly. A copy of the warranty statement for this product can be found within the owner’s manual.

Fountain Installation

Click for installation manual.


The Fractional Series requires no preventative or annual maintenance. Should the screen clog, it can be cleaned by turning the unit off, unplugging it from the power source, and removing debris by hand or with a wire brush.

Otterbine Fractional Fountain Parts Diagram