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pH Buffers


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  • Bluelab pH Down, 500 mL

    $11.85
    Use Bluelab pH Up and Down to adjust nutrient solutions to the optimum range of pH and improve nutrient availability to plants. Bluelabs pH Down is made of 35 percent w/w phosphoric acid, and pH Up is made of 35 percent w/w...Learn More

  • Bluelab pH Down, gal

    $47.05
    Use Bluelab pH Up and Down to adjust nutrient solutions to the optimum range of pH and improve nutrient availability to plants. Bluelabs pH Down is made of 35 percent w/w (certified) phosphoric acid, and pH Up is made of 35...Learn More

  • Bluelab pH Down, L

    $16.80
    Use Bluelab pH Up and Down to adjust nutrient solutions to the optimum range of pH and improve nutrient availability to plants. Bluelabs pH Down is made of 35 percent w/w (certified) phosphoric acid, and pH Up is made of 35...Learn More

  • Bluelab pH Up, 500 mL

    $14.54
    Use Bluelab pH Up and Down to adjust nutrient solutions to the optimum range of pH and improve nutrient availability to plants. Bluelabs pH Down is made of 35 percent w/w (certified) phosphoric acid, and pH Up is made of 35...Learn More

  • Bluelab pH Up, gal

    $54.20
    Use Bluelab pH Up and Down to adjust nutrient solutions to the optimum range of pH and improve nutrient availability to plants. Bluelabs pH Down is made of 35 percent w/w (certified) phosphoric acid, and pH Up is made of 35...Learn More

  • Bluelab pH Up, L

    $21.20
    Use Bluelab pH Up and Down to adjust nutrient solutions to the optimum range of pH and improve nutrient availability to plants. Bluelabs pH Down is made of 35 percent w/w (certified) phosphoric acid, and pH Up is made of 35...Learn More

  • Gold Label Ultra pH-, 250 mL

    $11.05
    Gold Label Ultra pH- is a universal acid for adjusting the pH levels of nutrient solutions. It contains a balanced mix of phosphoric acid, nitric acid and sulfuric acid. Ultra pH- should be added last to a nutrient solution...Learn More

  • Gold Label Ultra pH-, 4 L

    $86.79
    Gold Label Ultra pH- is a universal acid for adjusting the pH levels of nutrient solutions. It contains a balanced mix of phosphoric acid, nitric acid and sulfuric acid. Ultra pH- should be added last to a nutrient solution...Learn More

  • Gold Label Ultra pH-, 500 mL

    $18.04
    Gold Label Ultra pH- is a universal acid for adjusting the pH levels of nutrient solutions. It contains a balanced mix of phosphoric acid, nitric acid and sulfuric acid. Ultra pH- should be added last to a nutrient solution...Learn More

  • Gold Label Ultra pH-, L

    $30.44
    Gold Label Ultra pH- is a universal acid for adjusting the pH levels of nutrient solutions. It contains a balanced mix of phosphoric acid, nitric acid and sulfuric acid. Ultra pH- should be added last to a nutrient solution...Learn More

  • pH Down General Hydroponics

    $12.95
    To maximize plant growth, the pH content of your nutrients should be slightly acidic. Experienced growers consider the ideal pH for most crops to fall between 5.5 and 6.5. Users of General Hydroponics nutrient products...Learn More

  • pH Up General Hydroponics

    $12.95
    To maximize plant growth, the pH content of your nutrients should be slightly acidic. Experienced growers consider the ideal pH for most crops to fall between 5.5 and 6.5. Users of General Hydroponics nutrient products...Learn More

  • X Nutrients pH Down (1 Gallon)

    $35.10 $32.40
    Without the proper pH balance, plants will not efficiently uptake nutrients; it's one of the most overlooked aspects in effective gardening. pH-Up and pH-Down helps your plants achieve optimum absorption.Without the proper...Learn More

  • X Nutrients pH Down (1 Quart)

    $14.30 $13.20
    Without the proper pH balance, plants will not efficiently uptake nutrients; it's one of the most overlooked aspects in effective gardening. pH-Up and pH-Down helps your plants achieve optimum absorption.Without the proper...Learn More

  • X Nutrients pH Down (2.5 Gallon)

    $76.70 $70.80
    Without the proper pH balance, plants will not efficiently uptake nutrients; it's one of the most overlooked aspects in effective gardening. pH-Up and pH-Down helps your plants achieve optimum absorption.Without the proper...Learn More

  • X Nutrients pH Up (1 Gallon)

    $35.10 $32.40
    Without the proper pH balance, plants will not efficiently uptake nutrients; it's one of the most overlooked aspects in effective gardening. pH-Up and pH-Down helps your plants achieve optimum absorption.Without the proper...Learn More


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