MARLIN 'S GARDEN CENTER
HYDROPONICS - HORTICULTURE - GARDENING
111 INDUSTRIAL WAY STE B WEAVERVILLE CA. 96093
 (530)623-6663

AD500      Aqua Dip™ EC/TDS/Temperature Tester SRP: $131.00 BCM500      Bluelab Combo MeterSRP: $295.00 BGM500      Bluelab Guardian Monitor  SRP: $345.00 BPM500      Bluelab pH Meter SRP: $200.00
BCK500      Bluelab pH Probe Cleaning Kit SRP: $30.00 BCM505      Bluelab pH Combo Probe    SRP: $67.00 BSP500      BlueLab Soil pH MeterSRP: $245.00 BSP505      Bluelab Soil pH ProbeSRP: $105.00
BCK510      Bluelab Conductivity Probe Cleaning KitSRP: $21.50 CHA500      Champ® pH Tester  SRP: $55.00 CPT500      Checker pH Tester SRP: $44.50 CPT505      Checker Replacement ElectrodeSRP: $29.00 CWD500      Digistick PPM, EC & CF Meter    SRP: $100.00
CWE500      EC Dipstick MeterSRP: $94.00 CWS500      Soil pH Moist Meter   Standard Probe SRP: $72.00CWS510      Soil pH Moist Meter   12" Probe SRP: $83.00 CWTO500      24/7 Three-in-One Meter SRP: $221.00  CWTO505      pH Electrode for 24/7 Three-in-One    SRP: $56.00 CWTO510      PPM Electrode for 24/7 Three-in-OneSRP: $56.00      DITM500      Dual In-line TDS Monitor    SRP: $75.00
CWT500      Combo Waterproof Tester  RP: $196.00CWT505      TDS Calibration Solution 1382   230 mLSRP: $14.50 DIST500      Waterproof EC/TDS Tester SRP: $129.00 DMM500      Rapitest Digital Moisture MeterSRP: $11.00DSPM500      Rapitest Digital PLUS Soil pH Meter    SRP: $13.00 DPSP500      Digital PLUS Soil pH MeterSRP: $28.00
EJND507      Earth Juice Natural pH Down   7.8 lb SRP: $57.50 EJND525      Earth Juice Natural pH Down   25 lb SRP: $166.00 EJNU502      Earth Juice Natural pH Up   2 lbSRP: $18.00 EJNU508      Earth Juice Natural pH Up   8 lb SRP: $19.75 EJNU510      Earth Juice Natural pH Up   10 lb SRP: $69.00 EJNU530      Earth Juice Natural pH Up   30 lb SRP: $200.00 EST500      Electronic Soil Tester  SRP: $25.00 GCC500      GroCheck Combo Meter    SRP: $201.00  GCC505      GroCheck Combo pH Electrode    SRP: $64.00GCS505      GroCheck Solution 1500 ppm   230 mL SRP: $13.00  GCS510      GroCheck Solution 1500 ppm   460 mL SRP: $18.50 ERC505      Europonic Rockwool Conditioner   qt SRP: $15.00 ERC510      Europonic Rockwool Conditioner   gal SRP: $35.00
GPD502      General Hydroponics pH Down   8 oz SRP: $7.50GPD505      General Hydroponics pH Down   qt SRP: $11.00GPD510      General Hydroponics pH Down   gal SRP: $27.00 GPDD500      General Hydroponics Dry pH Down   1 1/2 lb SRP: $11.00 GPDD510      General Hydroponics Dry pH Down   16 lb SRP: $64.50 GPU502      General Hydroponics pH Up   8 oz SRP: $7.50GPU505      General Hydroponics pH Up   qt SRP: $11.00GPU510      General Hydroponics pH Up   gal SRP: $27.00GPUD500      General Hydroponics Dry pH Up   1 1/2 lb SRP: $11.00 GPUD510      General Hydroponics Dry pH Up   16 lb SRP: $64.50 HCCS500      Hanna Cal-Check Solution   20 mL, 20 pk SRP: $44.50HEC505      Hanna Electrode Cleaning Solution   230 mL SRP: $15.50 HES510      Hanna Electrode Storage Solution   500 mLSRP: $18.50 HPC505      Hanna pH 7 Calibration Solution   230 mLSRP: $14.50 IQM500      IQ 120 Mini Lab MeterSRP: $245.00 IQM505      IQ 120 Mini Lab Meter Replacement Probe SRP: $85.50 ITM500      In-line TDS Meter    SRP: $33.50
BPH510      Botanicare pH High   gal   SRP: $14.75
One of the most crucial elements to successful hydroponics gardening is maintaining proper pH. Botanicare pH High reliably raises pH in hydroponics nutrient... [more]
         
METT500      Martini EC TDS w/Temp Tester      SRP: $111.00
At less than eight inches tall and one-and-a-half inches wide, Milwaukee Instruments’ Martini EC, TDS & Temperature Meter is an accurate tester that fits anywhere! This floating, waterproof meter also displays temperature in Fahrenheit and Celsius,... [more]
         
METT505      EC, TDS & Temperature Probe for EC59 & EC60      SRP: $71.00
This EC, TDS & Temperature Probe replaces the unit included with Milwaukee Instruments’ Martini EC59 and EC60... [more]
         
MPC500      Panel Mounted Mini pH Controller      SRP: $180.00
For gardeners who need to read and control the pH level of their nutrient solution but don’t have a lot of space, the Panel Mounted Mini pH Controller is the perfect option. It works with any pH electrode with a standard BNC connector, its... [more]
         
MPC500K      Mini pH Controller Kit      SRP: $524.00
For gardeners who need to read and control the pH level of their nutrient solution but don't have a lot of space, the Mini pH Controller Kit is the perfect option. Combining the Panel Mounted Mini pH Controller, a 120V A/C power supply, a 0.4... [more]
         
MPC501      Dosing Pump   0.4 gph   SRP: $169.00
This 0.4 GPH Dosing Pump is a positive displacement solenoid driven pump that uses a minimum number of moving parts for maximum durability. Its positive displacement design ensures that each stroke is identical to the stroke before and after it,... [more]
         
MPC502      pH Combo Replacement Electrode      SRP: $168.00
This pH Combo Electrode replaces the unit included with the Mini pH Controller. Includes six-month manufacturer’s... [more]
         
MPDB515      Millennium pH Down Bloom   2 1/2 gal   SRP: $33.98
Millennium’s pH Down Bloom (pH 0.75+) lowers nutrient solution pH while delivering some primary and secondary macronutrients as well as micronutrients to blooming-stage plants. All elements in pH Down Bloom have been carefully blended for optimum... [more]
         
MPDB520      Millennium pH Down Bloom   5 gal   SRP: $60.00
Millennium’s pH Down Bloom (pH 0.75+) lowers nutrient solution pH while delivering some primary and secondary macronutrients as well as micronutrients to blooming-stage plants. All elements in pH Down Bloom have been carefully blended for optimum... [more]
         
MPS500      Milwaukee pH 7.01 Buffer Solution   220 mL bottle   SRP: $10.50
Use Milwaukee pH 7.01 Buffer Solution to calibrate compatible pH testers.... [more]
         
MPT500      Milwaukee pH600 Tester      SRP: $33.50
Milwaukee's pH600 Tester is an easy-to-use, low-cost instrument that measures quick and reliable pH, EC or TDS values. It features one-point manual calibration, automatic temperature compensation, ±0.1 pH accuracy and a range of 0.0 to 14.0 pH. The... [more]
         
MPU510      Millennium pH Up   gal   SRP: $15.00
Millennium’s pH Up (pH 11.5+) raises nutrient solution pH while delivering some primary and secondary macronutrients as well as micronutrients. This basic plant nutrient suits most stages of growth, will not tie up or displace nutrients, and can... [more]
         
MPU520      Millennium pH Up   5 gal   SRP: $60.00
Millennium’s pH Up (pH 11.5+) raises nutrient solution pH while delivering some primary and secondary macronutrients as well as micronutrients. This basic plant nutrient suits most stages of growth, will not tie up or displace nutrients, and can... [more]
         
MTS505      Milwaukee TDS Solution   20 mL   SRP: $1.00
Milwaukee TDS Solution is designed to work with the Milwaukee-made Smart portable and Smart Continuous TDS testers that require 1500 ppm solution. Note: Not for use with... [more]
         
MWPT500      Martini pH55 Waterproof pH & Temp Tester      SRP: $82.00
At less than eight inches tall and one-and-a-half inches wide, Milwaukee Instruments’ Martini pH55 Waterproof pH & Temperature Tester is an accurate tester that fits anywhere! This waterproof meter also displays temperature in Fahrenheit and... [more]
         
MWPT505      pH & Temperature Probe Replacement for pH55 & pH56      SRP: $49.50
This pH & Temperature Probe is the same unit included with Milwaukee Instruments’ Martini pH55 and pH56 Waterproof pH & Temperature Testers.  Protected by a six-month manufacturer's... [more]
         
MWPT510      Martini pH56 Waterproof pH & Temp Tester      SRP: $103.00
At less than eight inches tall and one-and-a-half inches wide, Milwaukee Instruments’ Martini pH56 Waterproof pH & Temperature Tester is an accurate tester that fits anywhere! This waterproof meter also displays temperature in Fahrenheit and... [more]
         
NPHA500      nutradip pH Meter   A/C Power   SRP: $125.00
nutradip meters are an effective, accessible way for gardeners to measure the pH of their nutrient solution! The nutradip pH Meter compensates for temperature variables automatically while continuously monitoring acid/alkaline levels in liquids... [more]
         
NPHB500      nutradip pH Meter   Battery Powered   SRP: $125.00
nutradip meters are an effective, accessible way for gardeners to measure the pH of their nutrient solution! The nutradip pH Meter compensates for temperature variables automatically while continuously monitoring acid/alkaline levels in... [more]
         
NPPA500      nutradip PPM Meter   A/C Powered   SRP: $93.50
nutradip meters are an effective, accessible way for gardeners to measure the pH of their nutrient solution! The nutradip PPM Meter performs automatic temperature compensation and measures TDS in EC and ppm with a range of 0-9990. Both meters... [more]
         
NPPB500      nutradip PPM Meter   Battery Powered   SRP: $93.50
nutradip meters are an effective, accessible way for gardeners to measure the pH of their nutrient solution! The nutradip PPM Meter performs automatic temperature compensation and measures TDS in EC and ppm with a range of 0-9990. Both meters... [more]
         
OWP510      Oakton Waterproof pHTestr 10      SRP: $132.00
Perfect for growers’ water quality testing needs, the Oakton Waterproof pHTestr 10 measures from 1.0 to 15.0 pH with a resolution and relative accuracy of 0.1 pH. This hand-held tester also incorporates a large-screen display, automatic temperature... [more]
         
OWP530      Oakton Waterproof pHTestr 30      SRP: $156.00
Perfect for growers’ water quality testing needs, the Oakton Waterproof pHTestr 30 measures from 1.00 to 15.00 pH with a resolution and relative accuracy of 0.01 pH. This hand-held tester also incorporates a large-screen display, automatic... [more]
         
OWP540      Oakton Waterproof pHTestr Sensor      SRP: $95.50
Gardeners can replace the worn or damaged electrode in their Oakton Waterproof pHTestr 10, 20 or 30 with an Oakton Waterproof pHTestr Sensor. Double junction sensor ensures long use and premium... [more]
         
PC500      pH Control Kit      SRP: $17.50
The pH Control Kit includes one liquid pH test kit and 8 ounces of each Up(base) and Down (acid). The pH Test Kit is a liquid tester that covers a pH range of 4.0 to 8.5. Includes sampling tube, reagent, and color comparison card. Both pH Down and... [more]
         
PCS500      pH Calibration Solution 7.0   8 oz   SRP: $7.50
This solution is all your customers need for calibration of their pH meter. They simply dip the probe in a small amount of the balanced solution, adjust the meter to read 7.0 and they're ready to... [more]
         
PCS503      pH Calibration Solution 4.01   8 oz   SRP: $7.50
A few minutes and a small amount of this balanced pH Calibration Solution 4.01 are all growers need to adjust their pH meter and secure accurate nutrient solution readings. Available in an eight-ounce bottle. ... [more]
         
PCS504      pH Calibration Solution 4.01   32 oz   SRP: $21.50
Gardeners can adjust their pH meters to 4.01 with this 32-ounce Calibration Solution. Simply immerse the pH electrode in the solution for one minute prior to... [more]
         
PCS505      pH Calibration Solution 7.0   qt   SRP: $21.50
This solution is all your customers need for calibration of their pH meter. They simply dip the probe in a small amount of the balanced solution, adjust the meter to read 7.0 and they're ready to... [more]
         
PES505      PET EC Solution   230 mL   SRP: $14.50
PET EC Solution allows you to calibrate your meter in moments. Conductivity value at 25°C: 1,413 µS/cm. Comes in FDA-approved opaque bottle to prevent light from damaging the... [more]
         
PET500      pH EC TDS (PET) Meter      SRP: $261.00
The pH-EC-TDS (PET) Meter combines three testers in one unit on a 3’ cable. This meter comes with a fast-response replaceable probe, 20 mL pH 7 buffer, 20 mL 1.41 EC and 1500 ppm calibration solutions, a 9V battery and instruction manual. The meter... [more]
         
PET510      PET Replacement Electrode      SRP: $122.00
This is a quality replacement Electrode for the pH-EC-TDS (PET) Meter.... [more]
         
PETT500      pH EC TDS Meter with F.S.T. Technology      SRP: $261.00
The Hanna pH EC TDS Meter with F.S.T. Technology accurately conducts each respective test in one handy unit. The meter ranges are: pH from 0.0 to 14.0 with a 0.1 resolution, EC from 0.00 to 4.00 with 0.01 resolution, and TDS from 0 to 1990 ppm with... [more]
         
PETT505      PETT Replacement Electrode      SRP: $130.00
Manufactured by Hanna Instruments to provide accurate readings to the pH-EC-TDS Meter with F.S.T. Technology, the multi-pin replacement Probe is covered by a six-month manufacturer's warranty. ... [more]
         
PETTM500      pH EC TDS Meter w/ Temperature Monitor      SRP: $201.00
Manufactured by Hanna Instruments, the pH, EC, TDS Meter with Temperature Monitor combines functionality and convenience in one unit. An internal microprocessor delivers constant readings with a high degree of accuracy, delivering the... [more]
         
PETTM505      PETTM500 Replacement Electrode      SRP: $116.00
Manufactured by Hanna Instruments to provide accurate readings to the pH-EC-TDS Meter with F.S.T. Technology, the multi-pin replacement Electrode connects to the meter via a six-foot cable and is covered by a six-month manufacturer's warranty. ... [more]
         
PHEP500      pHep® pH Tester      SRP: $57.50
Gardeners will love the dependable pHep® pH Tester from Hanna Instruments! This reliable and ergonomically-designed device features a non-clogging fiber junction, simple two-point calibration and measures pH from 0.0 - 14.0, with a resolution of... [more]
         
PHEP510      Waterproof pH Tester      SRP: $124.00
The Waterproof pH Tester has a durable casing to repel water and ensure long life; the dual level display shows both pH and temperature, and has a low-battery alert. This tester also comes complete with batteries, a replaceable electrode and an... [more]
         
PHEP515      pH Electrode (pH/Combo Waterproof)      SRP: $60.00
This replacement electrode is compatible with both the PHEP510 and CWT500 waterproof pH/temperature testers from... [more]
         
PRI500      Primo TDS Tester      SRP: $38.00
Customers who want to ensure the purity of the water produced by their RO water filtration system will enjoy the ease-of-use afforded them by the Primo TDS Tester. This microprocessor-powered instrument provides Total Dissolved Solids readings... [more]
         
PRI520      Primo 2 TDS Tester w/ Temp. Compensation      SRP: $42.00
Customers who want to ensure the purity of the water produced by their RO water filtration system will enjoy the ease-of-use afforded them by the Primo 2 TDS Tester with Automatic Temperature Compensation. This microprocessor-powered instrument... [more]
         
PTI500      pH Test Indicator   8 oz   SRP: $11.00
This concentrated pH test indicator is simple to use and offers results that are easy to read. Three drops of pH Test Indicator for every five milliliters of solution will determine the acidity or alkalinity of a plain water sample or nutrient... [more]
         
PTK500      pH Test Kit      SRP: $7.50
The pH Test Kit is a liquid tester that covers a pH range of 4.0 to 8.5. Includes sampling tube, reagent, and color comparison card. Makes testing easy and... [more]
         
PTP500      pH Test Papers      SRP: $6.50
A 15’ roll of pH test paper in a plastic holder. Measures a range of 4-9.... [more]
         
PTTM500      pH, TDS & Temperature Monitor      SRP: $255.00
Hanna Instruments’ pH & TDS Meter with Temperature Monitor features three dedicated backlit LCD screens, one for each parameter, so gardeners don’t have to switch back and forth for accurate readings. Each screen displays large, bright numbers for... [more]
         
SPB500      Sunleaves Pen Battery   4 pk   SRP: $6.00
1.5-volt Sunleaves Pen Batteries come four per pack and power most pH, EC and TDS pens. ... [more]
         
SPC500      Smart pH Controller      SRP: $171.00
When pH fluctuates beyond the user-selected set point, the Smart pH Controller engages an LED display alarm to help growers precisely monitor pH levels. Unit features a 0-14.0 pH testing range, a set point range between 5.5 and 9.5 pH, and +/-0.2... [more]
         
SPD500      SaferGro pH Down   pt   SRP: $9.50
Listed with the Organic Materials Review Institute (OMRI), SaferGro pH Down is a great way to improve nutrient uptake by naturally lowering the pH of alkaline soils and hydroponic... [more]
         
SPD505      SaferGro pH Down   qt   SRP: $13.00
Listed with the Organic Materials Review Institute (OMRI), SaferGro pH Down is a great way to improve nutrient uptake by naturally lowering the pH of alkaline soils and hydroponics... [more]
         
SPEP500      Sunleaves pH Expert Plus      SRP: $112.00
The Sunleaves pH Expert Plus is a highly-advanced handheld meter that measures pH from 0.0 to 14.0 and temperature from 32 to 176 degrees Fahrenheit (readings can also be displayed in degrees Celsius). Waterproof meter features an easy-to-read LCD... [more]
         
SPEP505      Sunleaves pH Expert Plus Replacement Probe      SRP: $53.00
These replacement probes are the same high-quality units that ship with the Sunleaves pH Expert Plus and Sunleaves TDS Expert Plus... [more]
         
SPM500      Soil pH Meter      SRP: $20.00
Flexible cable is ideal for hanging baskets or hard to reach plants. Measures pH range of 4 to 8. Includes pH information for over 400 plants on inside... [more]
         
SPPM500      Smart Portable pH Meter      SRP: $111.00
Smart Portable pH Meter features ingenious gel-filled, double-life junction electrodes which are removable and replaceable for easy storage and maintenance. The meter measures pH with a range of 0.0 to 14.0, resolution of 0.1 pH and an accuracy of ±... [more]
         
SPPM505      Smart Portable pH Meter Probe      SRP: $58.50
Replacement probe for Smart Portable pH Meter.... [more]
         
SPS500      Sharp pH Solution Kit   220 mL   SRP: $21.50
The Sharp pH Solution Kit keeps the Sharp pH Tester calibrated and correct. Set includes one 4.01 solution and one 7.01 solution, 220-mL... [more]
         
SPTK500      Sunleaves pH Test Kit      SRP: $9.50
The Sunleaves pH Test Kit gives hydroponic growers a simple, foolproof method of obtaining fast and accurate pH readings. Measuring from 4.0 to 8.0 pH, this solution is super concentrated and requires only one drop per test. The side of each bottle... [more]
         
SPTM500      Smart Portable TDS Meter      SRP: $114.00
The Smart Portable TDS Meter is a sturdy, high-quality meter that is simple-to-use and comes complete with a TDS probe, 20-mL calibration solution, 9-volt battery and screwdriver for calibration. This meter measures TDS with a range of 10-1990 ppm,... [more]
         
SPTM505      Smart Portable TDS Meter Probe      SRP: $69.50
Replacement probe for Smart Portable TDS Meter.... [more]
         
SPW500      Sharp pH Waterproof Tester      SRP: $77.50
The Sharp pH Waterproof Tester is a durable, easy-to-use portable tester with a large display. The accurate and reliable Sharp pH Waterproof Tester offers two-point manual calibration, ±0.1 pH accuracy, range 0.0 to 14.0 pH, and environment 0-50°c /... [more]
         
SPW505      Sharp pH Waterproof Tester Electrode      SRP: $51.00
The double-junction Sharp pH Waterproof Tester Electrode is a replacement for the same component found in our Sharp pH Waterproof Tester. Milwaukee Instruments warrants their replacement electrodes for a period of one... [more]
         
SSS500      Sharp Storage Solution   220 mL   SRP: $10.50
For use with Sharp Testers. 220 ml.... [more]
         
STD500      Sunleaves TDS Essential Digital TDS Pen      SRP: $25.00
The Sunleaves TDS Essential Digital Pen measures total dissolved solids from 0 to 9,999 parts per million with a resolution of one part per million and includes a data hold feature for temporary TDS reading... [more]
         
STD510      Sunleaves TDS Essential Calibration Solution   3 oz   SRP: $7.00
The Sunleaves TDS Essential Calibration Solution is the right match for regulating the Sunleaves TDS Essential Digital Pen and TDS Expert Plus. Solution measures a standard conductivity of 1,000 ppm and ensures accurate readings every... [more]
         
STEP500      Sunleaves TDS Expert Plus      SRP: $78.00
The Sunleaves TDS Expert Plus is a highly-advanced handheld meter that measures nutrient solution electrical conductivity (EC), total dissolved solids (TDS), and temperature. Waterproof meter features an easy-to-read LCD screen, auto-off and... [more]
         
STEP505      Sunleaves TDS Expert Plus Replacement Probe      SRP: $39.00
This replacement probe is the same high-quality unit that ships with the Sunleaves TDS Expert Plus.... [more]
         
STM500      Smart 3-in-1 Meter      SRP: $245.00
The Smart 3-in-1 Meter allows your customers the convenience of testing pH, EC and TDS with one easy-to-use meter. This meter comes complete with a replaceable combination electrode, 9V battery, calibration solution, and instructions. The Smart... [more]
         
STM505      Smart 3-in-1 Probe      SRP: $108.00
Replacement probe for Smart 3-in-1 Meter.... [more]
         
STMA500      Smart TDS Monitor w/ Alarm      SRP: $120.00
The Milwaukee Smart TDS Monitor with Alarm is a unit that continuously delivers precise readings. It reads TDS from 0-1990 ppm with ±2 percent accuracy, triggering a visual alarm if values drop below the user-specified acceptable range. This unit... [more]
         
STMC500      Smart TDS Monitor w/ Cal-Test      SRP: $109.00
The Milwaukee Smart TDS Monitor with Cal-Test is a unit that continuously delivers precise readings. It reads TDS from 0-1990 ppm with ±2 percent accuracy, triggering a visual alarm when the unit needs to be recalibrated. This unit features... [more]
         
STS500      Sharp TDS Solution   220 mL   SRP: $10.50
For use with Sharp TDS Tester. 220 ml.... [more]
         
STW500      Sharp TDS Waterproof Tester      SRP: $82.00
The durable Sharp TDS Waterproof Tester is an easy-to-use portable tester. It offers one-point manual calibration and measures from 0-1999 ppm. Resolution is 1 ppm with an accuracy of ±2% full scale. The TDS meter offers... [more]
         
STW505      Sharp TDS Waterproof Tester Probe      SRP: $74.50
The Sharp TDS Waterproof Tester Probe is a replacement for the same vital component found in our Sharp TDS Waterproof... [more]
         
TCS500      TDS Calibration Solution 1500 ppm   1/2 pt   SRP: $8.50
TDS Calibration Solution for use with TDS testers measuring 1500 PPM. Note: Not for use with Milwaukee (Sharp)... [more]
         
TCS510      TDS Calibration Solution 1500 ppm   qt   SRP: $21.50
TDS Calibration Solution for use with TDS testers measuring 1500 ppm. Note: Not for use with Milwaukee (Sharp)... [more]
         
TGT500      Tomato Grower's Test Kit      SRP: $3.25
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... [more]
         
TPD505      Technaflora pH Down   1 L   SRP: $12.00
 
TPD510      Technaflora pH Down   4 L   SRP: $24.50
 
TPD515      Technaflora pH Down   10 L   SRP: $47.00
Containing only high-quality ingredients, Technaflora’s pH Down uses nitric acid to effectively lower pH. Potent in small doses, Technaflora’s pH control products deliver consistent and stable nutrient solutions time after... [more]
         
TPU505      Technaflora pH Up   1 L   SRP: $12.00
 
TPU510      Technaflora pH Up   4 L   SRP: $24.50
 
TPU515      Technaflora pH Up   10 L   SRP: $47.00
Containing only high-quality ingredients, Technaflora’s pH Up uses potassium hydroxide to effectively raise pH. Potent in small doses, Technaflora’s pH control products deliver consistent and stable nutrient solutions time after... [more]
         
TRI500      Trimeter      SRP: $245.00
The continuously operating Nutradip Trimeter is a high-quality, easy-to-use meter that tests pH, TDS and nutrient temperature. Customers can simply plug the unit into the wall, drop the probe into their reservoir, and wait for the meter to return... [more]
         
TRI505      Trimeter Probe      SRP: $77.00
Replacement pH probe for the Trimeter tester. The probe is easily installed and comes with storage cap and pH probe storage... [more]
         
TRU500      Truncheon      SRP: $135.00
Gardeners can easily measure and maintain nutrient strength levels with the waterproof Truncheon Meter. Truncheon Meter reads in EC (0.2-3.6), CF (2-36), TDS/ppm 500 (100-1800) and ppm 700 (140-2520). Accurate within ± 4% of reading with a... [more]
         
WET500      Waterproof EcoTestr pH1      SRP: $71.50
Oakton’s Waterproof EcoTestr pH1 is a convenient pH meter that doesn’t let dirt or moisture keep it from delivering accurate readings. It features a clear LCD display, a waterproof, dustproof housing, automatic shutoff, and it floats! Measures pH... [more]
         
WET550      Waterproof EcoTestr pH2      SRP: $85.50
Oakton’s Waterproof EcoTestr pH2 is a convenient pH meter that doesn’t let dirt or moisture keep it from delivering accurate readings. It features a clear LCD display, a waterproof, dustproof housing, automatic shutoff, and it floats! Measures pH... [more]
         
WETT500      Waterproof EcoTestr TDS Low      SRP: $81.50
Oakton’s Waterproof EcoTestr TDS Low is a convenient TDS meter that doesn’t let dirt or moisture keep it from delivering accurate readings. It features a clear LCD display, a waterproof, dustproof housing, and automatic shutoff! It also has a... [more]
         
WPT500      Waterproof PCTestr 35 TDS      SRP: $185.00
This Waterproof PTTestr 35 TDS from Oakton is a convenient and accurate multi-use instrument. With features like double-junction pH electrodes, auto shutoff and more, it's a serious indoor gardener's dream come true! Reads TDS from 0-1000 ppm; pH... [more]
         
WPT520      Waterproof PCSTestr 35      SRP: $222.00
This Waterproof PCSTestr 35 TDS from Oakton is a convenient and accurate multi-use instrument. With features like double-junction pH electrodes, auto shutoff and more, it's a serious indoor gardener's dream come true! Reads EC from 0-2000 µS/cm;... [more]
         
WPT525      Waterproof PCSTestr 35 Sensor      SRP: $98.50
This pH/conductivity sensor replaces the unit included with the Waterproof PCSTestr 35.... [more]