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ec meters

  1. LiberalThinker

    Necessity of EC meter

    Hi. First post. I'm dipping my toes into DWC. I have a 70 litre Oxypot XL which will have one plant and was wondering if an EC meter is really necessary if I change the General Hydroponics Flora solution every 7-10 days. I will be maintaining pH with a chemical test kit. I plan on using this...
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