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  • Grow Lights
  • Mycology
  • Microbes
  • Silica
  • Grow Rooms
  • Climate
  • Nutrients
  • Hydroponics
  • Soil / Coco
  • Farm Shop
  • Gardening
  • Harvest Gear
  • Organic Seeds
  • New Products
  • Commercial
  • On Sale
  • Staff Picks
  • Protective Equipment

    • Shop by Brand

  • CANNA
  • Advanced Nutrients
  • General Hydroponics
  • Hydrofarm
  • Botanicare
  • Active Aqua
  • Secret Jardin
  • FoxFarm
  • Root Pouch
  • BuildASoil
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    • pH / TDS Testing

    We have everything you need to check and balance the pH and PPM of your nutrients solutions including pH / TDS / EC meters, pH test kits, pH adjustment buffers and calibration solutions.  pH and TDS meters are invaluable tools for the indoor hydroponic gardener. Plants will not thrive in harsh conditions, and these instruments make it simple to ensure you are giving them the best balanced hydroponics nutrient solutions possible.

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