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Pahroc Giant

About Pahroc Giant

Pronounced “PAW-rock” – Pahroc Giant Exxxpanded Perlite originates as unique volcanic glass rock from a mine located in Lincoln County, Nevada, which has been family owned and operated since 1958. Pahroc Giant® was originally sold by Paramount Perlite Co. under the brand name Sponge Rok®. Professional growers require high quality and consistent sized perlite to achieve consistent and beautiful results. Our high grade perlite has been used by professional growers for over 60 years due to it’s outstanding benefits and our business principles of quality products and efficient service.

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