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Blue Lab PH PEN
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Blue Lab PH PEN

£56.00 £79.90
Its essential to carefully monitor reservoirs to ensure that nutrients of the right strength, temperature and Ph are delivered to your plants when growing hydroponically. The Bluelab Guardian Ph Pen is the one-stop-shop for monitoring every essential parameter. The easily programmable visual alarm system allows you to solve any negative fluctuations in the plant by kicking into action and alerting you to the change.

  • Consistent, accurate readings
  • Simple & effective alarm system.
  • Water resistant.
  • Comes with 2 year guarantee

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