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Showing 133–144 of 160 results

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  HM Digital Replacement TDS/EC Sensor for COM-100

  $34.95
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  HM Digital Replacement pH/EC/TDS/Temp Sensor for COM-300

  $62.95
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  Replacement EC/TDS Sensor for HM-100 and HM-200

  $49.95
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  Replacement EC/TDS Sensor for HM-500

  $49.95
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  HM Digital Replacement pH Sensor for HM-500 and HM-200

  $54.95
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  HM Digital pH 4.0 buffer solution – 20 packets of 20 ml

  $24.95
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  HM Digital pH 7.0 Buffer Solution – 20 packets of 20ml

  $24.95
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  HM Digital pH Electrode Storage Solution – 20 packets of 20ml

  $24.95
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  HM Digital pH Electrode Storage Solution – 60cc

  $6.95
• 

  The LED Grow Book by Christopher Sloper

  Rated 5.00 out of 5
  $19.95
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  Ushio HiLUX GRO Pro Plus DE HPS Lamp – 1000w

  $149.95
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  Ushio HiLUX GRO Opti-Red DE HPS Lamp – 1000w

  $139.95