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    pH / EC / TDS Meters & Solutions

    At Quality Horticulture, we provide an extensive selection of pH, EC, and TDS meters tailored for all gardening applications—from indoor and hydroponic setups to greenhouse and outdoor cultivation. With our range of calibration solutions and pH adjustment products, you can effortlessly maintain optimal parameters for your plants, driving healthy growth and maximizing yields.

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    Q100346.jpg

    pH Up

    P_00409
    • Raises nutrient solution pH for optimal plant growth.
    • Helps growers maintain pH levels between 5.5 and 6.5, ideal for most plants.
    • Easy-to-use: add drops as needed after nutrient application.
    • Made with high-quality ingredients meeting safety standards.
    • Potent and effective in small doses.
    Q100348.jpg

    pH Down

    P_00408
    • Lowers nutrient solution pH for optimal plant growth.
    • Helps growers maintain pH levels between 5.5 and 6.5, ideal for most plants.
    • Easy-to-use: add drops as needed after nutrient application.
    • Made with high-quality ingredients meeting safety standards.
    • Potent and effective in small doses.
    Q100378.jpg

    General Hydroponics® Pro pH Up

    P_00181
    • Raises pH levels without contributing potassium.
    • Non-caustic.
    • Non-corrosive.
    • Do not need to be shipped Hazmat like other adjusters.
    • Alternative to harsh mineral hydroxides.
    • Triple zero HMIS score.
    • Does not contribute nutritional value like other adjusters.
    • Concentrated formula.
    Q100383.jpg

    General Hydroponics® pH Up

    P_00180

    General Hydroponics® pH Up 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.

    Q100386.jpg

    Earth Juice® Natural Up Powder

    P_00124
    • Raises pH of liquid plant fertilizers and foliar spray solutions.
    • Facilitates more effective nutrient absorption by plants.
    • Crystalline form ensures easy dissolution.
    • Derived from a natural source.
    Q100387.jpg

    Earth Juice® Natural Down Powder

    P_00123
    • Lowers pH of liquid plant fertilizers and foliar spray solutions.
    • Facilitates more effective nutrient absorption by plants.
    • Crystalline form ensures easy dissolution.
    • Derived from a natural source.
    Q113147.jpg

    General Hydroponics® Pro pH Down

    P_00589
    • Lowers the pH of irrigation water or nutrient solutions without adding phosphorus, nitrogen, or sulfate.
    • Non-caustic.
    • Non-corrosive.
    • Do not need to be shipped Hazmat like other adjusters.
    • Alternative to harsh mineral hydroxides.
    • Triple zero HMIS score.
    • Does not contribute nutritional value like other adjusters.
    • Concentrated formula.
    Q113148.jpg

    General Hydroponics® pH Control Kit

    P_00601

    General Hydroponics® pH Control Kit contains 8 oz pH UP, 8 oz pH DOWN, 1 oz indicator and vial.

    Q113154.jpg

    General Hydroponics® pH Down Liquid

    P_00602

    General Hydroponics® pH Down acid formulation uses phosphoric acid to lower the pH to the proper level.

    Q113155.jpg

    General Hydroponics® pH Test Kit

    P_00603
    • Easy pH testing with simple steps.
    • Fill a test tube halfway with nutrient solution.
    • Add a few drops of pH Test Indicator.
    • Observe color change for pH reading.
    • Preferred by experienced growers for reliability and ease of use.
    • Use three drops per 5 ml of solution.
    Q112710.jpg

    CannaMax Labs

    P_00071

    CannaMax Labs offers a range of professional-quality calibration and nutrient solutions.

    • pH 4 and pH 7 reference solutions for the calibration of pH meters.
    • 1,000 ppm for TDS meter calibration.
    • Potassium Silicate helps prevent mold and fungus growth, raises nutrient pH levels, and supplies essential potassium.
    Q112694.jpg

    Bumper Crop™ pH Up and pH Down

    P_00053
    • The perfect pH adjustment solutions!
    • pH Up raises the pH of plant food solutions.
    • pH Down lowers the pH of the water around plant roots.
    • Helps your plants absorb nutrients.
    • Enhances flower development.
    • Works with any nutrient program.
    • Provides simple and easy pH maintenance.
    • Available in a range of sizes.
    Q100345.jpg

    pH Up (1 L / 1 qt)

    Q100345
    • Raises nutrient solution pH for optimal plant growth.
    • Helps growers maintain pH levels between 5.5 and 6.5, ideal for most plants.
    • Easy-to-use: add drops as needed after nutrient application.
    • Made with high-quality ingredients meeting safety standards.
    • Potent and effective in small doses.
    • 1 liter (1 quart) bottle.
    Q100346.jpg

    pH Up (4 L / 1 gal)

    Q100346
    • Raises nutrient solution pH for optimal plant growth.
    • Helps growers maintain pH levels between 5.5 and 6.5, ideal for most plants.
    • Easy-to-use: add drops as needed after nutrient application.
    • Made with high-quality ingredients meeting safety standards.
    • Potent and effective in small doses.
    • 4 liter (1 gallon) bottle.
    Q100378.jpg

    General Hydroponics PRO pH Down 6 gal

    Q100378

    General Hydroponics® Pro pH adjusters are based on completely different technology than our traditional smaller sized adjusters offering. New non-mineral based acids and bases will not add nutrient value like the use of phosphoric acid or potassium hydroxide. They are safer to use as well as compared to mineral based adjusters. This is due to having a zero rating score for all safety categories on the HMIS scale as well as being non-corrosive and non-caustic. This means there are no HazMat fees to ship these products like other pH adjusters. Use Pro pH UP or Pro pH DOWN to effectively adjust the pH of nutrient solutions or irrigation water. GH Pro pH adjusters are highly concentrated and available in commercial sizes.

    • Non-Caustic
    • Non-Corrosive
    • Do not need to be shipped Hazmat like other adjusters
    • Alternative to harsh mineral hydroxides
    • Triple zero HMIS score
    • Does not contribute nutritional value like other adjusters
    • Concentrated Formula
    Q100379.jpg

    GH pH Up 8 oz

    Q100379

    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.

    Q100376.jpg

    GH pH Down Pro 1 Gallon

    Q100376

    General Hydroponics® Pro pH adjusters are based on completely different technology than our traditional smaller sized adjusters offering. New non-mineral based acids and bases will not add nutrient value like the use of phosphoric acid or potassium hydroxide. They are safer to use as well as compared to mineral based adjusters. This is due to having a zero rating score for all safety categories on the HMIS scale as well as being non-corrosive and non-caustic. This means there are no HazMat fees to ship these products like other pH adjusters. Use Pro pH UP or Pro pH DOWN to effectively adjust the pH of nutrient solutions or irrigation water. GH Pro pH adjusters are highly concentrated and available in commercial sizes.

    • Non-Caustic
    • Non-Corrosive
    • Do not need to be shipped Hazmat like other adjusters
    • Alternative to harsh mineral hydroxides
    • Triple zero HMIS score
    • Does not contribute nutritional value like other adjusters
    • Concentrated Formula
    Q100377.jpg

    General Hydroponics PRO pH Down 2.5 gal

    Q100377

    General Hydroponics® Pro pH adjusters are based on completely different technology than our traditional smaller sized adjusters offering. New non-mineral based acids and bases will not add nutrient value like the use of phosphoric acid or potassium hydroxide. They are safer to use as well as compared to mineral based adjusters. This is due to having a zero rating score for all safety categories on the HMIS scale as well as being non-corrosive and non-caustic. This means there are no HazMat fees to ship these products like other pH adjusters. Use Pro pH UP or Pro pH DOWN to effectively adjust the pH of nutrient solutions or irrigation water. GH Pro pH adjusters are highly concentrated and available in commercial sizes.

    • Non-Caustic
    • Non-Corrosive
    • Do not need to be shipped Hazmat like other adjusters
    • Alternative to harsh mineral hydroxides
    • Triple zero HMIS score
    • Does not contribute nutritional value like other adjusters
    • Concentrated Formula
    Q100374.jpg

    General Hydroponics PRO pH Up 6 gal

    Q100374

    General Hydroponics® Pro pH adjusters are based on completely different technology than our traditional smaller sized adjusters offering. New non-mineral based acids and bases will not add nutrient value like the use of phosphoric acid or potassium hydroxide. They are safer to use as well as compared to mineral based adjusters. This is due to having a zero rating score for all safety categories on the HMIS scale as well as being non-corrosive and non-caustic. This means there are no HazMat fees to ship these products like other pH adjusters. Use Pro pH UP or Pro pH DOWN to effectively adjust the pH of nutrient solutions or irrigation water. GH Pro pH adjusters are highly concentrated and available in commercial sizes.

    • Non-Caustic
    • Non-Corrosive
    • Do not need to be shipped Hazmat like other adjusters
    • Alternative to harsh mineral hydroxides
    • Triple zero HMIS score
    • Does not contribute nutritional value like other adjusters
    • Concentrated Formula
    Q100375.jpg

    General Hydroponics PRO pH Up 55 gal

    Q100375

    General Hydroponics® Pro pH adjusters are based on completely different technology than our traditional smaller sized adjusters offering. New non-mineral based acids and bases will not add nutrient value like the use of phosphoric acid or potassium hydroxide. They are safer to use as well as compared to mineral based adjusters. This is due to having a zero rating score for all safety categories on the HMIS scale as well as being non-corrosive and non-caustic. This means there are no HazMat fees to ship these products like other pH adjusters. Use Pro pH UP or Pro pH DOWN to effectively adjust the pH of nutrient solutions or irrigation water. GH Pro pH adjusters are highly concentrated and available in commercial sizes.

    • Non-Caustic
    • Non-Corrosive
    • Do not need to be shipped Hazmat like other adjusters
    • Alternative to harsh mineral hydroxides
    • Triple zero HMIS score
    • Does not contribute nutritional value like other adjusters
    • Concentrated Formula
    Q100372.jpg

    GH pH Up Pro 1 Gallon

    Q100372

    General Hydroponics® Pro pH adjusters are based on completely different technology than our traditional smaller sized adjusters offering. New non-mineral based acids and bases will not add nutrient value like the use of phosphoric acid or potassium hydroxide. They are safer to use as well as compared to mineral based adjusters. This is due to having a zero rating score for all safety categories on the HMIS scale as well as being non-corrosive and non-caustic. This means there are no HazMat fees to ship these products like other pH adjusters. Use Pro pH UP or Pro pH DOWN to effectively adjust the pH of nutrient solutions or irrigation water. GH Pro pH adjusters are highly concentrated and available in commercial sizes.

    • Non-Caustic
    • Non-Corrosive
    • Do not need to be shipped Hazmat like other adjusters
    • Alternative to harsh mineral hydroxides
    • Triple zero HMIS score
    • Does not contribute nutritional value like other adjusters
    • Concentrated Formula
    Q100373.jpg

    General Hydroponics PRO pH Up 2.5 gal

    Q100373

    General Hydroponics® Pro pH adjusters are based on completely different technology than our traditional smaller sized adjusters offering. New non-mineral based acids and bases will not add nutrient value like the use of phosphoric acid or potassium hydroxide. They are safer to use as well as compared to mineral based adjusters. This is due to having a zero rating score for all safety categories on the HMIS scale as well as being non-corrosive and non-caustic. This means there are no HazMat fees to ship these products like other pH adjusters. Use Pro pH UP or Pro pH DOWN to effectively adjust the pH of nutrient solutions or irrigation water. GH Pro pH adjusters are highly concentrated and available in commercial sizes.

    • Non-Caustic
    • Non-Corrosive
    • Do not need to be shipped Hazmat like other adjusters
    • Alternative to harsh mineral hydroxides
    • Triple zero HMIS score
    • Does not contribute nutritional value like other adjusters
    • Concentrated Formula
    Q100382.jpg

    GH pH Down Liquid Quart

    Q100382

    The acid formulation uses phosphoric acid to lower the pH to the proper level.

    Q100387.jpg

    Earth Juice Natural Down Powder (0.72 kg / 1.6 lb)

    Q100387
    • Lowers pH of liquid plant fertilizers and foliar spray solutions.
    • Facilitates more effective nutrient absorption by plants.
    • Crystalline form ensures easy dissolution.
    • Derived from a natural source.
    • 720 grams (1.6 pounds).
    Q100385.jpg

    Earth Juice Natural Up Powder (0.90 kg / 2 lb)

    Q100385
    • Raises pH of liquid plant fertilizers and foliar spray solutions.
    • Facilitates more effective nutrient absorption by plants.
    • Crystalline form ensures easy dissolution.
    • Derived from a natural source.
    • 900 grams (2 pounds).
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