pH, EC, & TDS Meters

• Patented design, precisely monitors temperature and humidity levels inside the Mondi™ Mini Greenhouse or other environments
• Provides growers with real-time temperature and humidity data and eliminates the need to open the dome for readings.
• Ideal for successful large-scale propagation of seedlings and cuttings.
• Includes a proprietary 8 mm (0.315 inch) drill piece, placement sticker, and product information guide.
• Color: White.
• Dimensions (LxWxH): 4.1 x 0.3 x 1.2 in (10.41 x 0.76 x 3.05 cm).

• Patented design, precisely monitors temperature and humidity levels inside the Mondi™ Mini Greenhouse or other environments
• Provides growers with real-time temperature and humidity data and eliminates the need to open the dome for readings.
• Ideal for successful large-scale propagation of seedlings and cuttings.
• Includes a proprietary 8 mm (0.315 inch) drill piece, placement sticker, and product information guide.
• Color: Black.
• Dimensions (LxWxH): 4.1 x 0.3 x 1.2 in (10.41 x 0.76 x 3.05 cm).

• Patented design, precisely monitors temperature and humidity levels inside the Mondi™ Mini Greenhouse or other environments
• Provides growers with real-time temperature and humidity data and eliminates the need to open the dome for readings.
• Ideal for successful large-scale propagation of seedlings and cuttings.
• Includes a proprietary 8 mm (0.315 inch) drill piece, placement sticker, and product information guide.
• Color: Green.
• Dimensions (LxWxH): 4.1 x 0.3 x 1.2 in (10.41 x 0.76 x 3.05 cm).

• Patented design, precisely monitors temperature and humidity levels inside the Mondi™ Mini Greenhouse or other environments
• Provides growers with real-time temperature and humidity data and eliminates the need to open the dome for readings.
• Ideal for successful large-scale propagation of seedlings and cuttings.
• Includes a proprietary 8 mm (0.315 inch) drill piece, placement sticker, and product information guide.
• Color: Orange.
• Dimensions (LxWxH): 4.1 x 0.3 x 1.2 in (10.41 x 0.76 x 3.05 cm).

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.

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.

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.

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.

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.

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

• Easy, accurate, and affordable testing of THC.
• Test for THC content in under 10 minutes using dual-color technology.
• Kit contains analytical tools required for testing THC in flower, oil, extracts, or concentrates.
• Made in Canada.
• Three (3) test pack.

• Easy, accurate, and affordable testing of CBD.
• Test for CBD content in under 10 minutes using colorimetric strip technology.
• Kit contains analytical tools required for testing CBD in flower, oil, extracts, or concentrates.
• Three (3) test pack.

• 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.

• 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.

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.

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.

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

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

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 prefer our pH Test Kit to expensive electronic meters because of its reliability and ease of use, which are important factors when the health of a valuable crop is at stake. Use 3 drops per 5ml of solution.

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

• Professional-quality pH reference solution for pH meter calibration.
• 500 milliliter (1 pint) bottle.

• Professional-quality EC reference solution for TDS meter calibration.
• 500 milliliter (1 pint) bottle.