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Soluble Potash (K2O)
Check and adjust pH (5
this creates the potential for electricity to move through a solution
and as a hydroponic medium
Hoffman Fir Bark 2.2lbs Books Soluble Potash (K2O)Hoffman West Coast Fir Bark is a premium grade, natural bark mulch sourced from fir trees native to the West Coast. Ideal for both indoor and outdoor use, this decorative bark enhances the appearance of potted plants, garden beds, and landscaping while improving soil health. It helps retain moisture, regulate soil temperature, and reduce weed growth. Fir bark is also an excellent component in custom potting mixes, especially for orchids, succulents,
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