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      Water Filters / RO

      RO water/Meters and solutions

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      73 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
      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
      $ 13.99
      Bluelab PH 7.0 Calibration solution

      Bluelab PH 7.0 Calibration solution

      250 ml of Calibration Solution pH 7.0

      In stock
      $ 13.99
      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 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
      Hanna soil ph tester

      Hanna soil ph tester

      Designed to bring simplicity to pH testing of soil, the HI981030 GroLine Soil pH Tester is designed for taking direct pH measurements in soil for environmental and agricultural testing.

      In stock
      $ 143.00
      Ecoplus 1/10 chiller

      Ecoplus 1/10 chiller

      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

      Out of stock
      $ 500.41
      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
      Hydrologic stealth R/O std filter

      Hydrologic stealth R/O std filter

      Removes 98%+ of all contaminants in your tap water. Leading the industry in efficiency the Stealth has a 2:1 waste to product water ratio. Optional 1:1 ratio flow restrictor saves 50% more waste water. Customized for gardening and hydroponics. The Stealth

      Out of stock
      $ 339.95
      Hydrologic stealth R/O with upgraded kefir filter

      Hydrologic stealth R/O with upgraded kefir filter

      Our Stealth-RO300 comes with the upgraded KDF85/granulated catalytic carbon filter already installed. Perfect for hydroponic gardens requiring up to 300 gallons a day of pure reverse osmosis (RO) water.
      Produces up to 300 GPD (gallons per day)/12 GPH (ga

      Out of stock
      $ 359.95
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