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  1. Showing 1 - 36 out of 174 results for "best soil ph for cannabis"
    1. Humboldts Secret Ph Up And Ph Down Control Kit | Liquid Ph Plant Balancer For Soil Gardening & Hydroponics Growing System | Optimal Nutrient Uptake
      (13)
      Humboldts Secret Ph Up And Ph Do…
      ($0.59 / 1 floz)
      A
      Amazon.com
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    2. (52)
      Foxfarm Happy Frog Potting Soil, 12…
      ($0.14 / 1 oz)
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      Amazon.com
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    3. Advanced Nutrients 6201-14AB Ph P…
      ($1.12 / 1 floz)
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      Amazon.com
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    4. (68)
      Foxfarm Happy Frog Potting Soil, 12…
      ($0.04 / 1 oz)
      A
      Amazon.com
      delivery truckFree shipping
    5. Advanced Nutrients 3800-15 Ph-Dow…
      ($0.44 / 1 floz)
      A
      Amazon.com
      Price Drop Green Icon16% DROP
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    6. (62)
      Advanced Nutrients Ph Perfect Grow…
      ($0.28 / 1 floz)
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      Amazon.com
      Price Drop Green Icon25% DROP
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    7. (44)
      Foxfarm Cultivation Nation Ph Up - Li…
      ($0.62 / 1 floz)
      A
      Amazon.com
      delivery truckFree shipping
    8. (13)
      Humboldts Secret Ph Up And Ph Do…
      $131.88
      W
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      SALE
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    9. (17)
      Sun Gro Horticulture SUNGRO HORTI…
      ($0.07 / 1 oz)
      A
      Amazon.com
      delivery truckFree shipping
    10. Advanced Nutrients 1301-15 Grow P…
      ($0.29 / 1 floz)
      A
      Amazon.com
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    • Soil Ph Tester | Best Soil Ph Tester 2025

    • Soil pH Meter - Easy-To-Read Display

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