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Grodan Rockwool Multiblocks are the best choice for rooting cuttings. Can also be used for germinating seeds. We recommend soaking them in pH 5.5 water overnight, and add seeds or cuttings the next day. Keep them under a dome to retain moisture and mist if necessary. From here, you can transplant into any growing medium, soil or hydro. If you want to transplant into larger rockwool blocks later on, don't use these cubes (they're too big) - use the 1.5x1.5x1.5'' Minicubes.
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