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      Water Filters / RO

      RO water/Meters and solutions

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      73 Products
      Hydrologic small boy R/O upgraded filter

      Hydrologic small boy R/O upgraded filter

      Reduces up to 99% chlorine, sediment, rust, silt, volatile organic compounds (VOCs), mercury, lead, and PCBs (organic chlorine) keeping beneficial bacteria and microorganisms alive and healthy.

      High flow rate 60 gallons per hour
      Rated at 1 GPM (gallon

      Out of stock
      $ 155.00
      Hydrologic small boy R/O Catalytic carbon filter

      Hydrologic small boy R/O Catalytic carbon filter

      Instant de-chlorinator and sediment filter with upgraded KDF85/Catalytic Carbon filter. Stand alone. 1-Gallon per minute. Small Boy w/ Upgraded KDF85/Catalytic Carbon Filter.

      Out of stock
      $ 175.00
      Hanna Groline .cleaning solution 20ml

      Hanna Groline .cleaning solution 20ml

      HI70061G is a high quality cleaning solution designed with hydroponics, aquaponics, and greenhouses in mind. Single-use sachets are highly portable, with a small footprint and a lightweight design. They are the perfect accessory for your on-the-go testing

      In stock
      $ 1.44
      Hanna Groline quick cal solution 20ml

      Hanna Groline quick cal solution 20ml

      HI50036P is a quick calibration solution for use with Hanna's GroLine pH and/or EC/TDS meters. Using the Quick Cal function found in compatible meters allows for a single point calibration for pH and/or conductivity sensors. Each sachet has the lot numbe

      In stock
      $ 1.56
      Hanna Groline storage solution 20ml

      Hanna Groline storage solution 20ml

      HI70061G is a high quality cleaning solution designed with hydroponics, aquaponics, and greenhouses in mind. Single-use sachets are highly portable, with a small footprint and a lightweight design. They are the perfect accessory for your on-the-go testing

      In stock
      $ 1.44
      Hanna Groline ec/tds meter

      Hanna Groline ec/tds meter

      The HI98318 is our latest pocket meter for measuring the EC/TDS of a hydroponic nutrient solution. This modern looking meter is only 0.7" thick and extremely ergonomic, fitting comfortably in your hand. The HI98318 has a very large easy to read LCD displa

      Out of stock
      $ 94.00
      Hanna Groline portable ph/tds/temp

      Hanna Groline portable ph/tds/temp

      Designed to bring simplicity to nutrient testing, the HI9814 Portable GroLine Meter is designed specifically for Hydroponic growers. The specialized electrode combines 3 sensors in a single rugged probe featuring a polypropylene body, integrated temperatu

      In stock
      $ 324.99
      Hanna Groline quick cal solution 500ml

      Hanna Groline quick cal solution 500ml

      HI5036-050 is a quick calibration solution for use with Hanna's GroLine pH and/or EC/TDS meters. Using the Quick Cal function found in compatible meters allows for a single point calibration for pH and/or conductivity sensors. Each bottle has the lot numb

      Out of stock
      $ 19.00
      Hanna Groline storage solution 230ml

      Hanna Groline storage solution 230ml

      HI70300-023 is a GroLine storage solution prepared with reagent grade chemicals that can be used to ensure optimum performance of your pH and ORP electrodes. It is necessary to store a pH electrode in a solution in order to keep the glass membrane of the

      In stock
      $ 16.00
      Hanna Groline cleaning solution 500ml

      Hanna Groline cleaning solution 500ml

      HI7061-050 is the GroLine general purpose cleaning solution that can be used for a variety of applications. Electrodes can become dirty from use and will produce inaccurate results even as they read correctly in a pH buffer. Hanna's cleaning solutions eli

      In stock
      $ 19.00
      Hanna Groline cleaning solution 230ml

      Hanna Groline cleaning solution 230ml

      HI70061G is a high quality cleaning solution designed with hydroponics, aquaponics, and greenhouses in mind. Single-use sachets are highly portable, with a small footprint and a lightweight design. They are the perfect accessory for your on-the-go testing

      In stock
      $ 16.00
      Grow 1 extra sensor for wireless weather station

      Grow 1 extra sensor for wireless weather station

      This sensor pairs exclusively with the Grow1 Wireless Weather Station (part # 301005), displays the temperature and humidity readings, and has a range of up to 165 feet. A maximum of 3 sensors may be paired per station.
      ATTENTION. Grow1 sensors DO NOT WO

      In stock
      $ 15.95
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