pH Adjusters

16 products


  • Sale -22% Cutting Edge Solutions - pH Down Hydroponic Center Cutting Edge Solutions 1 QT Case of 12

    Cutting Edge Solutions - pH Down

    Concentrated pH adjustment liquid, acidic buffer lowers water and nutrient solution pH. Highly concentrated, use conservatively. Slowly add to pure water or nutrient solution, at small intervals. Note beginning reading and then test pH. Repeat small application process and stir well, until desired pH is achieved.  Developed with Cutting Edge Solutions nutrients Highly concentrated for rapid adjustment Designed for use with plants No artificial dyes

    $156.99$122.91

  • Sale -22% Cutting Edge Solutions - pH Up Hydroponic Center Cutting Edge Solutions 1 QT Case of 12

    Cutting Edge Solutions - pH Up

    Concentrated pH adjustment liquid, alkaline buffer raises water and nutrient solution pH. Highly concentrated, use conservatively. Slowly add to pure water or nutrient solution, at small intervals. Note beginning reading and then test pH. Repeat small application process and stir well, until desired pH is achieved. Amount of CES pH Up™ required for adjustment will vary, depending on the strength of nutrient mixture and purity of the water source used.  Developed with Cutting Edge Solutions nutrients Highly concentrated for rapid adjustment Designed for use with plants No artificial dyes

    $156.99$122.91

  • Sale -19% FoxFarm Cultivation Nation® pH UP Hydroponic Center FoxFarm 1 pt

    FoxFarm Cultivation Nation® pH UP

    FoxFarm Cultivation Nation® pH UP   Product Details HOW TO USE: Cultivation Nation pH UP raises the pH of nutrient solutions. An ideal pH range for growing plants is 5.6 – 6.8.  Shake well before use.Take a pH reading of the nutrient solution. Based on your pH reading, adjust the pH by adding small amounts of pH UP at a time, testing for pH again after each application. Continue until the desired pH is reached. CAUTION: Contains potassium hydroxide. Only add pH UP directly to water or nutrient solution. See product label for detailed precautionary and first aid information.     Shipment Restrictions Due to state restrictions, we are unable to ship this product to the following location(s): NORTH CAROLINA, PUERTO RICO 

    $119.40$97.10

  • Sale -9% GroStar GS1 pH Pen Hydroponic Center GroStar

    GroStar GS1 pH Pen

    GroStar GS1 pH Pen Product Details AI11010 - GroStar GS1 pH Pen Lab grade instruments designed specifically for growers! Includes: pH 7 & pH4 calibration solution (50ml bottle each), KCL storage solution (10ml bottle), lanyard and user manual Measures pH and temperature Premium probe technologies and materials ensure high accuracy and durability with minimal maintenance Easy-to-use design and fast calibration adjustment Double junction replaceable probe, so you don’t have to discard the entire pen when the probe reaches its end of life Large 3-color backlit screen gives you clear information Durable structure, IP67 waterproof Powered by AAA batteries with auto off function Automatic temperature compensation 2-year warranty on pen, 1-year warranty on probe

    $115.99$105.19

  • Sale -10% GroStar GS1-E replacement pH electrode Hydroponic Center GroStar

    GroStar GS1-E replacement pH electrode

    GroStar GS1-E replacement pH electrode Product Details AI58010 - GroStar GS1-E replacement pH electrode Replacement GS1 probe measures pH and temperature Premium probe technologies and materials ensure high accuracy and durability with minimal maintenance Low-resistance lithium glass membrane Double junction structure uses blue gel electrolyte without the air bubble 1-year warranty

    $50.99$45.89

  • Sale -20% GroStar GS2 Soil pH Pen Hydroponic Center GroStar

    GroStar GS2 Soil pH Pen

    GroStar GS2 Soil pH Pen   Product Details AI31020 - GroStar GS2 Soil pH Pen Lab grade instruments designed specifically for growers! Includes: pH 7 &  pH 4 solution (50ml bottles of each), KCL soaking solution (10ml bottle), cleaning brush, hole dibber, lanyard and user manual Measures pH and temperature in nutrient solution, soil, coco coir, rockwool, and many other media types Premium probe technologies and materials ensure high accuracy and durability with minimal maintenance Impact-resistant spear glass tip, 10 times stronger than conventional glass bulb PTFE ring prevents a clogged junction caused by soil particles, significantly increases durability Backed by Apera's proprietary sensor technology from Switzerland Easy-to-use design and fast calibration adjustment Replaceable Swiss LabSen Spear Soil pH Probe Large 3-color backlit screen gives you clear information Durable structure, IP67 waterproof Powered by AAA batteries with auto off function Automatic temperature compensation 2-year warranty on pen, 1-year warranty on probe

    $256.99$205.59

  • Sale -20% GroStar GS2-E replacement Soil Spear pH electrode Hydroponic Center GroStar

    GroStar GS2-E replacement Soil Spear pH electrode

    GroStar GS2-E replacement Soil Spear pH electrode Product Details AI58020 - GroStar GS2-E replacement Soil Spear pH electrode Spear pH Probe measures pH and temperature in nutrient solution, soil, coco coir, rockwool, and many other media types Premium probe technologies and materials ensure high accuracy and durability with minimal maintenance Impact-resistant spear glass tip, 10 times stronger than conventional glass bulb PTFE ring prevents a clogged junction caused by soil particles, significantly increases durability Backed by Apera's Swiss LabSen proprietary sensor technology 1-year warranty

    $181.99$145.59

  • Sale -6% GroStar pH calibration kit (pH 4/7, 8 oz. each) Hydroponic Center GroStar

    GroStar pH calibration kit (pH 4/7, 8 oz. each)

    GroStar pH calibration kit (pH 4/7, 8 oz. each) Product Details GroStar by Apera pH calibration kit (pH 4/7, 8 oz. each) Kit includes:  (1) 8 oz. pH 4.0 calibration solution (1) 8 oz. pH 7.0 calibration solution  pH measuring equipment must be cleaned and calibrated regularly to ensure accurate readings. High accuracy (0. 01 pH): standardized against NIST Certified pH references within 0. 01 pH at 25˚C (77˚F). ideal for the calibration of all pH meters Color-coded, double-sealed, 1-year shelf life Expiration date and temperature/ph reference chart provided for reference Non-hazardous product Calibration Solution should be stored in a cool place out of direct sun and heat.

    $18.99$17.85

  • Sale -6% GroStar pH calibration kit (pH 4/7/10, 8 oz. each) Hydroponic Center GroStar

    GroStar pH calibration kit (pH 4/7/10, 8 oz. each)

    GroStar pH calibration kit (pH 4/7/10, 8 oz. each) Product Details GroStar by Apera pH calibration kit (pH 4/7/10, 8 oz. each) Kit Includes: (1) pH 4.0 calibration solution 8 oz. (1) pH 7.0 calibration solution 8 oz. (1) pH 10.0 calibration solution 8 oz. pH measuring equipment must be cleaned and calibrated regularly to ensure accurate readings High accuracy (0. 01 pH): standardized against NIST Certified pH references within 0. 01 pH at 25˚C (77˚F). ideal for the calibration of all pH meters Color-coded, double-sealed, 1-year shelf life Expiration date and temperature/ph reference chart provided for reference Non-hazardous product Calibration Solution should be stored in a cool place out of direct sun and heat

    $28.99$27.25

  • Sale -6% GroStar pH Probe Maintanence Kit Hydroponic Center GroStar

    GroStar pH Probe Maintanence Kit

    GroStar pH Probe Maintanence Kit Product Details All-in-one maintanence kit provides everything you need to maintain, clean and store your GroStar pH probe   Kit Includes:  3M KCL storage solution (4oz.) Cleaning solution (8oz.) CalPod solution organizer Probe cleaning brush Wash bottle

    $23.99$22.55

  • Hades Down Hydroponic Center Nectar for the Gods 1 qt

    Hades Down

    Hades Down is a pH adjusting liquid used to lower the pH of your nutrient solution. Hades Down chelates elements in the nutrient solution into stable, slow releasing forms which are easier for plants to absorb. Providing readily absorbed natural molecules, Hades Down has the ability to stimulate microorganisms and plant growth. This stimulation will directly affect increases in CO2 production, photosynthesis, beneficial microbes, and plant vigor and health. When mixing fertilizers in a reservoir, Hades Down will help prevent nutrient solution fall out.

    $21.58

  • Sale -10% HM Digital Replacement pH Sensor Probe for HM-500 HM Digital Meters

    HM Digital Replacement pH Sensor Probe for HM-500

    Replacement pH Sensor HM-500 HM-500 Replacement pH probe 2 Meter / 80 inch cable length Includes pH storage solution, 6-month warranty

    $59.99$53.99

  • Sale -47% House & Garden pH + Osmosis Stabilizer

    House & Garden pH + Osmosis Stabilizer

    House & Garden pH + Osmosis Stabilizer   pH Osmosis / Stabilizer is effective at stabilizing reverse osmosis (RO) water.  

    $1,012.20$541.39

  • Sale -42% Microbe Life Hydroponics pH UP, 1 qt Microbe Life Hydroponics

    Microbe Life Hydroponics pH UP, 1 qt

    Microbe Life Hydroponics pH UP is formulated with R/O and UV sterilized water and combines two pH adjusters for buffered effectiveness. It contains three electrolytes to help maintain osmotic balance.   Safely raises pH levels Combines 2 pH adjusters for buffered effectiveness Contains 3 electrolytes to help maintain osmotic balance  Will not harm plants

    $24.95$14.39