ph adjusterGeneral Hydroponics pH Control Kit (pH Up, pH Down, Test Indicator)★★★★★ 4.7~$22Buy Now on AmazonSee full details
seed-starting
Grodan Rockwool Starter Cubes (1-inch, 50-pack)
★★★★½4.6 / 5
~$30Buy now on Amazon (opens in new tab)About this product
The 1-inch rockwool cubes referenced in the hydroponic seed starting section — pre-soak at pH 5.5 before use, then transfer directly into DWC or NFT.
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