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and as a hydroponic medium
Add bioavailable calcium and magnesium to the mix
Soluble Potash (K2O)
The Slabs are easy to use just cut holes in the top of the slab set your cubes on top and cut a few slits in the bottom of the slab's plastic for drainage
Hoffman Fir Bark 2.2lbs Books and as a hydroponic mediumHoffman 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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