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Important Formulas
1. Quantity of boulders in a pond (tons)
=length (ft.) x width (ft.)/65
2. Quantity of ¼ ¼1/4 to 3” gravel (tons)
=tons of boulders x .45
3. Quantity of boulders used in a stream
=3/4 ton per 10ft. of stream length
4. Quantity of ¼ to 3” gravel (tons)
=1/2 ton per 10ft. of stream length
5. Approximate ¾ ¾ to 1 ¼ tons of boulders to build around the face of your Falls/Filter
6. Gallons of water in pond
=length x width x average depth x 7.48
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