Metering, Monitoring, & Testing

• Soil test kit for pH and N, P, K levels.
• 40 tests: 10 each for pH, nitrogen, phosphorus, potash.
• Patented colour comparator capsule system.
• Simple, fast, accurate results with easy use.
• Includes charts for 100+ plants.
• Complete instructions for soil adjustments.

• Decorative rainfall measuring tool for garden use.
• Measures up to 12.5 cm (5 in) rainfall.
• Scaled in inches and millimetres.
• Adjustable height up to 91.44 cm (36 in).
• Metal stake with black holder included.
• Polystyrene cylinder resists cracking.

• Soil tester for measuring acidity and alkalinity.
• Tests soil pH quickly with instant gauge readout.
• Measures pH range from 0 to 8.
• 15.24 cm (6 in) probe for soil testing.
• Includes pH guide for 50+ plants.
• No batteries required for operation.

• Soil moisture tester for plant watering guidance.
• Measures moisture on a 0 - 4 (dry to wet) scale.
• 15.24 cm (6 in) stainless steel probe.
• Easy-to-read display, instant readout.
• No batteries required for operation.
• Includes guide for watering 100+ plants.

• Soil tester for moisture and pH levels.
• Signals soil moisture level.
• Indicates soil acidity and alkalinity.
• Includes watering needs for many plants.
• No batteries required for operation.
• Simple tool for monitoring soil conditions.

• Digital moisture meter for soil use only.
• Instant digital read-out, easy-to-read display.
• Measures soil moisture at root level.
• Helps prevent over and/or under watering.
• Includes guide with watering advice for 100+ plants.
• Batteries required and included.

• Compact meter measuring soil, light, and fertility factors.
• Measures sunlight exposure and soil moisture levels.
• Tests soil pH and combined fertility indicators.
• Designed for indoor and outdoor plant use.
• Multi-function tool for plant growth monitoring.
• Helps create ideal growing environment for plants.

• Combination meter for measuring soil moisture and light.
• Measures moisture 1 - 10 (dry - wet) at root level.
• Indicates light levels A - H (cloudy - sunny).
• Tethered 10.16 cm (4 in) stainless steel probe.
• Includes guide for 150+ plant care needs.
• No batteries required; easy-to-read display.

• Digital tool for measuring soil conditions.
• Measures soil pH, fertility, and temperature.
• Simple and easy to use.
• Provides clear digital readings.
• Helps monitor key soil factors.
• Supports better gardening decisions.

• Soil moisture meter for root-level readings.
• Measures moisture on a 1 - 10 (dry - wet) scale.
• Tethered stainless steel probe, 10.16 cm (4 in).
• Large, easy-to-read display with instant readout.
• Includes watering guide for 150+ plants.
• No batteries required; designed for soil use only.

• Soil pH meter for indoor and outdoor use.
• Measures soil acidity/alkalinity from 3.5 - 9.
• Instant readout with large, easy display.
• 10.16 cm (4 in) tethered bi-metallic probe.
• No batteries, no chemicals or litmus paper.
• Includes pH guide for various plants.

• Electronic unit for soil pH and fertility testing.
• Tests pH and total combined N-P-K levels.
• Provides results in about one minute.
• Designed for use in soil only.
• Guide includes pH ranges for 350+ plants.
• Requires one AA battery (not included).

• Digital soil moisture tester for plants.
• Checks moisture at root level.
• Easy-to-read digital display.
• Helps prevent over and under watering.
• Stainless steel probe included.
• Includes guide for 150+ plants.

• Digital soil tester for key growing conditions.
• Measures pH, moisture, light and temperature.
• Modern digital output for easy reading.
• Corded probe for easy handling and reading.
• Includes instructions, guidelines and tips.
• pH plant list for 450+ plants included.

• Digital soil tester for acidity and alkalinity.
• Measures pH range from 3.5 to 9.0.
• Instant, easy-to-read digital output display.
• Use for veggies, flowers, fruit, and landscape plants.
• Includes pH preferences for 400+ plants.
• Batteries required and included.

• Digital meter for measuring soil pH in garden soil.
• Instant digital read-out, easy-to-read display.
• Measures pH from 3.5 to 9.0.
• Bi-metallic probe for accurate soil readings.
• Includes pH preferences for 400+ plants.
• Batteries included with instructions and tips.

• Multi-function meter for soil, light, and fertility checks.
• Measures pH, moisture, sunlight, and N-P-K levels.
• Toggle between gauges for instant readings.
• No batteries required for operation.
• Calibrated to USDA soil and light standards.
• Includes plant care guides and 400+ pH preferences.

• Soil testing kit for food plots and garden use.
• Includes 20 tests: 5 each for pH, N, P and K.
• Simple DIY method with quick, accurate results.
• No mail-in testing required.
• Includes instructions and fertilization guidelines.
• pH preference list for 450+ plants included.

• Digital soil meter for measuring pH levels.
• Helps maximize food plot production.
• Accurate digital readout with instant results.
• Measures soil acidity and alkalinity.
• 15 cm (6 in) bi-metallic probe.
• No batteries required; easy to use repeatedly.

• A simple and reliable tool to measure acidity or alkalinity.
• Provides quick, visual results through an easy-to-read colour change.
• Helps monitor and adjust pH levels for optimal conditions.
• Dip strip and compare colour against chart to determine pH level.

• Essential for downloading data from handheld meters to a computer.
• Cable contains electronics to convert meter signal to USB signal recognized by computer.
• ApogeeAMS software included on flash drive.
• Software compatible with Windows (XP and later) and Mac (10.10 and later) systems.

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.

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.

• The perfect pH adjustment solution!
• 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.
• 1 liter (1 quart) bottle.