ActiveAir Indoor-Outdoor Thermometer w/Hygrometer

The large display shows current temperature and humidity levels, and includes a remote probe for second zone temperature. Records high and low points for both temperature and humidity.

(ECO 2371) - $17.95

ActiveAir Hygro-Thermometer

This large number LCD display is visible from a distance. Very accurate and hangs or mounts on a wall surface.

(ECO 2370) - $19.75

Hanna Checker pH Tester

Hanna Instruments 98129 Combo pH/EC/TDS/Temperature Tester with Low Range EC

The combo waterproof testers offer the highest accuracy in measurements with a single tester. Will measure pH / EC / TDS and temperature.

(BW CWT500) - $165.20
(normally ships in 1-5 days)

Hanna 98128 pHep 5 Pen

pHep 5 is the most advanced pH tester on the market today. Has a pH readout of 0.01, automatic shutoff, replaceable pH electrode cartridge, stability indicator and automatic calibration. 1 year warranty.

(BW PHEP500) - $51.00
(normally ships in 1-5 days)

Hanna 98311 Dist 5 Pen

Dist 5 will accurately measure EC and TDS. Features include replaceable electrode, adjustable TDS ratio, temperature in °C or of, automatic temperature compensation, battery level indicator and automatic shutoff. 2 year warranty.

(BW DIST500) - $114.00
(normally ships in 1-5 days)

Hanna Combo Meter

The HI9813 is a rugged all around waterproof meter for easy pH / EC / TDS measurements. The HI 9813-6 has an added Cal-Check feature that can access the calibration status of the probe in seconds. 

HI 9813-0 (BW PET500) - $208.60
(normally ships in 1-5 days)

With Cal-Check
HI 9813-6 (BW PETT500) - $231.00
(normally ships in 1-5 days)

Hanna Dual Grochek

 The HI 991404 continuously monitors pH / EC / TDS / Temp. in your nutrients. Comes with a rugged, non-clogging pH electrode and conductivity probe that will stand up to the most aggressive environments. Dual-level backlit LCD.

(BW PETTM500) - $176.60
(normally ships in 1-5 days)

Hanna Dual Grochek

 The HI 981404N is ideal for hydroponic applications where pH and TDS levels need to be continuously monitored. These wall mount monitors feature a large, easy-to-read LCD that displays pH and TDS readings simultaneously.

(BW GCC500) - $163.80
(normally ships in 1-5 days)

Hanna TriMeter

The HI 981504 is designed for continuous monitoring of pH, TDS and Temp. Simple to install, readings can be viewed simultaneously on 3 backlit LCDs which can be easily viewed at a distance - even in low light.

(BW PTTM500) - $194.80
(normally ships in 1-5 days)

Pro pH Test Kit

This handy kit is included with our larger garden systems. A simple measurement of nutrient solution will give pH accuracy within .5. Includes a color scale, test vial and indicator solution.

(ECO 5519) - $5.65
(normally ships in 1-5 days)

Hanna Soil Test Pen

 The HI 98331 takes quick and accurate readings directly in soil. It is the only meter available that will take conductivity readings directly from the soil without creating a soil solution for testing. The meter also measures temperature and the conductivity readings are compensated for temperature with the sensor incorporated into the probe.

(BW DSC500) - $115.50
(normally ships in 1-5 days)

ActiveAir 3 - Way Meter

 Gardeners can conveniently test their moisture, light, and pH levels with the handy ActiveAir 3-Way Meter. Moisture readings register on a scale of 0 (dry) to 10 (moist), light readings range from 0 (low light) to 2000 (very strong light), and pH readings between pH 0 (acidic) and pH 10 (basic) are represented. The durable, easy-to-read tester is suitable for indoors or out and needs no batteries to operate.

(ECO 2374) - $9.45
(normally ships in 1-5 days)

DO NOT LEAVE IN SOIL.
CLEAN PRONGS AFTER EACH USE.

Sunleaves Three-Way Meter Meter

Gardeners can conveniently test their moisture, light, and pH levels with the handy Sunleaves Three-Way Meter. Moisture readings register on a scale of 0 (dry) to 10 (moist), light readings range from 0 (low light) to 2000 (very strong light), and pH readings between pH 0 (acidic) and pH 10 (basic) are represented. The durable, easy-to-read tester is suitable for use indoors or out and needs no batteries to operate.

(BW STWM500) -  $10.85
(normally ships in 1-5 days)

DO NOT LEAVE IN SOIL.
CLEAN PRONGS AFTER EACH USE.

Rapitest pH Soil Tester

This handy unit is easy to use and very portable. The user simply takes a small soil sample and mixes it with water and the special activator gel-cap to instantly assess soil pH.

(BW RPS500) - $4.87
(normally ships in 1-5 days)

Tomato Grower's Test Kit

The Tomato Grower's Test Kit allows gardeners to test their soil four different ways to see if it's ideal for growing juicy, delicious tomatoes. Kit includes tests for pH, nitrogen, potash, and phosphorous.

(BW TGT500) - $2.95
(normally ships in 1-5 days)

pH UP™  -  pH Adjusting Solution

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. pH Up Dry is available in 1.5 lb size.

1.5 lb. (ECO 2817) - $10.69

pH DOWN™  -  pH Adjusting Solution

 The Acid formulation uses food grade Phosphoric acid to lower the pH to the proper level. pH Down Dry is available in  1.5 lb size.

1.5 lb. (ECO 2818) - $10.69

Hanna pH 4.01 Calibration Solution

HANNA®' buffer solutions are prepared according to precise formulas and are standardized with a pH meter calibrated according to the NIST standards.

This buffer value is widely used in water purification plants, in the food industry and where ever the pH is expected to be slightly acidic.  8 oz. Bottle.

 (ECO 5487) - $13.20

Hanna pH 7.01 Calibration Solution

The Hanna pH 7.01 Calibration Solution is compatible with several pH testers including the Champ pH Tester and the GroCheck Combo.  8 oz. bottle.

 (ECO 5488) - $13.20

Hanna Electrode Storage Solution

 Proper maintenance is the key to ensuring that pH testers retain their accuracy. Gardeners simply place a few drops of Hanna Electrode Storage Solution in the electrode’s protective cap to safeguard the sensitive component from dryness. This solution may also be used to protect electrodes used in oxidation reduction potential (ORP) testing applications. 8 oz. bottle.  

 (ECO 5486) - $13.20

Hanna Electrode Cleaning Solution

Proper maintenance is the key to ensuring the accuracy of any pH tester. Hanna Electrode Cleaning Solution, used at least once per week and as often as once per day, keeps dirt and contaminants from causing incorrect readings. It’s as simple as a five-minute soak! 230-milliliter bottle.  

 (ECO 5485) - $13.20