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Sizing Requirement Guidelines 
for proper Aeration

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Calculate Lake Surface Area:
 
(A) Multiply the length of the lake (in feet) by the width of the lake (in feet) to get the square feet
     of the lake's surface. Area = (L X W)

(B) Divide the surface area by 43,560 to get the number of surface acres.


                     
   SURFACE AREA  =  number of acres
                               43,560


Calculate Necessary Aeration:

(1) Normal aeration requires the displacement of (one) acre foot or 325,900 gallons of water every
     24 to 48 hours.

(2) This will add a minimum of 3.2 lbs of oxygen per horsepower per hour.

(3) For normal water conditions use a minimum of 1 1/2 hp aerator per surface
     acre.

(4) For warmer climates or excessive algae growth use a minimum of one 2 hp
     aerator per surface acre.

For Lakes and Ponds less than one acre:

      1/4 acre  =  1/2 hp aerator
      1/3 acre  =  3/4 hp aerator
      1/2 acre  =  1 hp aerator
      3/4 acre  =  1 1/2 hp aerator

Calculate Number of Aerators:

Number of aerators = Number of acres (rounded upwards)

Example- The lake is 220 ft. wide and 370 ft. long
               (220 ft. x 370 ft = 81,400 square feet)
               (81,400 sq. ft. divided by 43,560 = 1.87 surface acres)
               (1.87 surface acres is rounded upwards to 2 surface acres)


Lake requires either:
Two x 1 1/2 hp aerators for normal conditions, or
Two x 2 hp aerators for warmer climates or high algae conditions.

To Maximize Water Quality:

(1)  Always begin aeration prior to hot weather and algae build up.

(2)  Physically remove or chemically treat excessive algae and sludge
      prior to aeration.

(3)  If water quality is compromised (light to moderate algae), aerate
      24 hours per day continuously until algae is under control.



Would You Prefer to have your Aerator Sizing calculated.