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      Water Filters / RO

      RO water/Meters and solutions

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      63 Products
      Stealth RO red

      Stealth RO red

      Standard 10" x 4.5" sediment pre-filter included with the Evolution system. Pleated and cleanable.

      Reduces silt, rust, dirt, sand, and sediment. To clean, rinse and hose on a regular basis and make sure to change every 6-12 months of use.

      Out of stock
      $ 33.95
      HydroLogic Stealth RO 150

      HydroLogic Stealth RO 150

      Removes 98%+ of all contaminants in your tap water
      3-Stage RO unit, 1 RO membrane, Green Coconut Carbon Filter, cleanable sediment filter, membrane power flush kit, automatic shut-off valve, pressure gauge

      In stock
      $ 304.99
      Bluelab 2.77EC Conductivity solution

      Bluelab 2.77EC Conductivity solution

      250 ml of 2.77 EC Conductivity Solution.

      Out of stock
      $ 10.00
      bluelab PH 4.0 CALIBRATION SOLUTION

      bluelab PH 4.0 CALIBRATION SOLUTION

      250 ml of Calibration Solution pH 4.0

      In stock
      $ 12.99
      Bluelab PH 7.0 Calibration solution

      Bluelab PH 7.0 Calibration solution

      250 ml of Calibration Solution pH 7.0

      Out of stock
      $ 12.99
      Hanna Groline ph/ec/tds combo HI98130

      Hanna Groline ph/ec/tds combo HI98130

      The HI 98130 waterproof floating tester displays pH, high-range conductivity (EC) and total dissolved solids (TDS) with Automatic Temperature Compensation (ATC) on a dual-level LCD display for hydroponics, agricultural, and water quality testing

      Out of stock
      $ 186.00
      Hanna Groline protective “boot”

      Hanna Groline protective “boot”

      HI710030 is an green rubber boot that fits over selected portable meters including HI9814 pH/EC/TDS, HI991000 family of meters, and selected thermistor based thermometers. The silicone rubber boot not only provides additional shockproof protection

      In stock
      $ 37.95
      Hanna Groline 1413 solution 230ml

      Hanna Groline 1413 solution 230ml

      conductivity standard that is prepared against a NIST traceable potassium chloride solution and supplied with a certificate of analysis. Hanna conductivity solutions have the lot number and expiration date clearly marked on the label and are air tight

      Out of stock
      $ 17.95
      Hanna Groline quick cal 230ml

      Hanna Groline quick cal 230ml

      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 number and expiration date.

      Out of stock
      $ 17.95
      Clonex 15ml packets

      Clonex 15ml packets

      Foremost rooting compound gel in its field since 1989; Full spectrum of mineral nutrients and trace elements to nourish the young roots during the formative stages; Remains in contact around the stem sealing the cut tissue; Supplies hormones needed for ro

      In stock
      $ 7.00
      Ecoplus 1/10 chiller fitting

      Ecoplus 1/10 chiller fitting

      EcoPlus Chillers are suitable for use in reservoirs, hydroponic systems & fresh or saltwater aquariums. With quality engineering and an easy to use interface, the EcoPlus Water Chiller is a great tool for a wide variety of uses. From hydroponics systems t

      In stock
      $ 12.22
      Ecoplus 66 pump

      Ecoplus 66 pump

      The EcoPlus® Bottom Draw Pumps are driven by a high powered magnetic rotor and oil free motor which works great for small hydroponic systems, aquariums and fountains. The bottom draw feature allows you to lower your reservoir tank to a minimum by drawing

      Out of stock
      $ 13.66
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