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Orchid Nerd ™ Sponge Rock 1 Cubic Foot Box

  • 2600

Sponge Rock

Sponge rock, also known by the name Perlite, is a very common ingredient in orchid mixes and for good reason. Sponge rock decreases compaction of mix, increases aeration and retains moisture. Sponge rock is a volcanic glass that expands when heated and becomes very porous.

  • #3 medium size sponge rock



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