Black plastic balls for filling reservoirs. Shadow balls are small plastic spheres that float on the surface of the tank and prevent water from evapor

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Black plastic balls for filling reservoirs. Shadow balls are small plastic spheres that float on the surface of the tank and prevent water from evaporating

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Size: 5184px × 3456px
Location: Warsaw Poland
Photo credit: © Jan Kravtsov / Alamy / Afripics
License: Royalty Free
Model Released: No

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