EcoPlus Eco 633 Fixed Flow Submersible/Inline Pump 594 GPH EcoPlus® Fixed Flow Rate Submersible or Inline pumps are great for a variety of application including hydroponics, aquariums, ponds and more. These magnetic driven pumps are constructed with a

EZ-Clone Water Pump 925 (800 GPH) EZ-Clone® ultra efficient, super high output water pumps are great for any application. The pump is smaller in physical size, creating less heat. Fully coated impellers make for a smooth and quiet operation.

EZ-Clone Water Pump 750 (700 GPH) for 64 and 128 Units EZ-Clone® ultra efficient, super high output water pumps are great for any application. The pump is smaller in physical size, creating less heat. Fully coated impellers make for a smooth and quiet

Maxi-Jet® Water Pump Energy-efficient Maxi-Jet® Pumps are very durable. With a sealed casing and superior internal design, it ensures that they won't overheat when ran dry, unlike most other pumps. They feature 3-suction cup mounting to ensure that the

EcoPlus Convertible Bottom Draw Water Pump 730 GPH The EcoPlus® Convertible Bottom Draw Pump is the first hydroponic pump of its kind. With an interchangeable outlet fitting, this line of pumps fits almost all hydroponic applications. The bottom draw

EcoPlus Convertible Bottom Draw Water Pump 585 GPH The EcoPlus® Convertible Bottom Draw Pump is the first hydroponic pump of its kind. With an interchangeable outlet fitting, this line of pumps fits almost all hydroponic applications. The bottom draw

Olympus Up Quart One of a kind in the industry. Olympus is derived from micronized limestone designed to not only raise the pH of your nutrient solution, but also to buffer organic acids from healthy soil decomposition. The calcium in Olympus is also

Bluelab® Multimedia pH Meter with Leap™ pH Probe The perfect, portable way to accurately measure and monitor pH levels in a wide range of media. We have combined the Bluelab® Multimedia pH Meter and Bluelab® Leap™ pH Probe to take fast, accurate measur

Bluelab® pH Pen Measures pH and temperature. Selectable units for °C and °F. Backlit LCD display. Double junction probe (not replaceable). Successful calibration indicator. Hold reading function and low battery warning. Fully waterproof with auto off f

Bluelab® ppm Pen — Now Bluelab® Conductivity Pen Measures conductivity and temperature. Selectable units for conductivity and temperature. Backlit LCD display with low battery warning. Successful calibration indicator and calibration is optional. Fully

HM Digital™ Waterproof pH Meter Model PH-200 Measures pH and temperature. Auto-ranging three point calibration with digital fine tuning. pH buffer 4 solution is in a sponge embedded in a clear cap. Measurement range: 0–14 pH with a waterproof housing.

HM Digital™ EC/TDS HydroTester Model COM-80 The COM-80 is an economically priced, reliable EC/TDS meter that is ideal for testing applications such as hydroponics, gardening, pools, spas, aquariums, reef tanks, water ionizers, drinking water and more.

GH pH Down 8 oz The acid formulation uses food-grade phosphoric acid to lower the pH to the proper level.

GH pH Down Liquid Quart The acid formulation uses food-grade phosphoric acid to lower the pH to the proper level.

GH pH Up Liquid Quart This Base solution is formulated using potassium hydroxide and potassium carbonate. Add a little at a time when your nutrient pH is too low in order to raise the pH to the proper level.

GH pH 4.01 Calibration Solution Quart General Hydroponics™ uses the highest-quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics™ technicians check e

GH pH 4.01 Calibration Solution 8 oz General Hydroponics™ uses the highest-quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics™ technicians check ea

GH pH 7.01 Calibration Solution Quart General Hydroponics™ uses the highest-quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics™ technicians check e

GH pH Test Indicator 8 oz General Hydroponics pH Test Kits make pH testing easy. Simply fill a test-tube halfway with nutrient, add a few drops of pH Test Indicator and observe the coloration of the liquid in the test vial. Many experienced growers pre

Ez-Clone Clear Rez Pint EZ-Clone® Clear Rez is a pH balanced, noninvasive water treatment designed to keep all of the internal workings of your cloning system crystal clear and operating at peak performance. It is designed to be used throughout your e