pH Adjusters

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Whether growing your garden in soil or hydroponics, the proper balance of pH levels determine the success of your crop. Both soil and nutrient solutions can be made more alkaline or acidic, as needed, to best suit your plants.

pH: (chemistry) p(otential of) H(ydrogen)

Find pH, EC, TDS, PPM Meters and Testers here.

We are HAZMAT approved to safely ship all of your PH control needs. We take great care in insuring that your packages will get to you in perfect condition, without leaking or being damaged in any way.

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Sort by manufacturer: Advanced Nutrients, Botanicare, Earth Juice, Espoma, General Hydroponics, Generic, House and Garden, Micro Essential Laboratory, Oregons Only Organics, Rapitest, Remo Nutrients, SaferGro, Sunleaves, Technaflora

Advanced Nutrients - pH Perfect - Bloom

Advanced pH Perfect bloom will give you the healthiest plants around. You will get the most of your money with this concentrated blend.
$9.95 - $69.95

Advanced Nutrients - pH Perfect - Micro

With chelates absorbed into your plants, you can expect nothing but high quality micro nutrients and an amazing garden. Advanced Nutrients pH Perfect Micro is the way to go!
$13.50 - $94.95

Advanced Nutrients pH DOWN

Advanced Nutrients pH balancing products are pure concentrates and have not been diluted.
$16.56 - $46.93

Botanicare pH Adjusters

Highly concentrated pH adjusters that help hold the pH in your reservoir stable for a long period of time.
$10.25 - $23.95

Earth Juice Double Down

Earth Juice Double Up and Double Down are potent pH adjusters that can be used in hydroponics systems or with soil based gardens.
$9.50 - $21.95

Earth Juice Double Down AND Up - 1 quart each

Earth Juice Double Up and Double Down are potent pH adjusters that can be used in hydroponics systems or with soil based gardens.
$17.95

Earth Juice Double Up - 1 quart

Earth Juice Double Up and Double Down are potent pH adjusters that can be used in hydroponics systems or with soil based gardens.
$9.50

Earth Juice Natural pH DOWN

Proper pH levels are crucial for healthy plant growth. A pH that is too high or too low can reduce the availability of some nutrients causing plant stress.
$14.31 - $49.95

Earth Juice Natural pH UP - 2 lb

Proper pH levels are crucial for healthy plant growth. A pH that is too high or too low can reduce the availability of some nutrients causing plant stress.
$16.09

Earth Juice Natural pH UP and DOWN - 2 lb each

Proper pH levels are crucial for healthy plant growth. A pH that is too high or too low can reduce the availability of some nutrients causing plant stress.
$28.85

Espoma Organic Garden Lime - 6.75 lb

Espoma Organic Garden Lime is pellitized for easy application and is much safer than hydrated lime.
$3.99

Espoma Organic Soil Acidifier - 6 lb

Espoma organic Soil Acidifier is an effective way to lower soil pH to its optimal range for acid loving plants such as rhododendrons, azaleas and hydrangeas.
$8.50

General Hydroponic Dry pH UP

We all know that the pH level in your hydroponics system is critical to optimum plant health.
$11.95 - $58.50

General Hydroponics pH Test Kit

The General Hydroponics pH Test Kit measures the pH level of your hydroponics nutrient solution.
$6.95

GH Liquid Pro Ph DOWN

We all know that the pH level in your hydroponics system is critical to optimum plant health. Most plants require pH levels between 5.5 and 6.8.
$11.95 - $27.95

GH Liquid Pro pH UP

We all know that the pH level in your hydroponics system is critical to optimum plant health. Most plants require pH levels between 5.5 and 6.8.
$11.95 - $27.95

GH pH Control Kit

This pH Control Kit by General Hydroponics includes everything you need to check and maintain the proper pH levels for your indoor garden.
$14.95

GH pH Test Indicator Solution - 8 oz

Need a refill for your General Hydroponics pH testing kit?
$9.95

Hades Down

Nectar for the Gods Hades Down is used to lower the pH level of nutrient solution.
$16.95 - $143.95

Hydrion pH Test Paper Roll

Hydrion Insta-Chek pH Paper comes in a convenient plastic holder that contains a 15 foot roll of ph test paper, enough for about 1000 pH tests.
$6.25

Litmus / pH Paper Strips

Litmus paper strips are an easy-to-use alternative to check nutrient solution when you do not have a pH tester on hand.
$1.99

Olympus Up

Nectar for the Goods Olympus Up is a liquid lime pH booster that is also a terrific source of calcium for your garden.
$11.50 - $71.95

pH+ Osmosis Stabilizer

pH+ Osmosis Stabilizer from House and Garden immediately neutralizes unstable pH levels from RO filtered water, and contains the perfect amounts of trace minerals to ensure your plants are getting all the nutrition they need.
$15.95

Rapitest pH Soil Tester

The Rapidest Soil pH Tester is designed to give accurate pH level results with relatively little effort.
$4.50

Remo's Micro

​Remo’s Micro is apart of a three part system. Calcium EDTA is highly effective in increasing crop production, heat stress reduction, and when used with boron it advances cell wall structure for firm, strong plants.
$20.00 - $73.95

SaferGro pH Down - 1 pint

SaferGro pH Down is a great way to improve nutrient uptake by naturally lowering the pH of alkaline soils and hydroponic solutions.
$7.95

SaferGro pH Down - 1 quart

SaferGro pH Down is a great way to improve nutrient uptake by naturally lowering the pH of alkaline soils and hydroponic solutions.
$10.95

Sunleaves pH Tester Kit

The Sunleaves pH Test Kit gives hydroponic gardeners a simple, foolproof method of getting fast, accurate pH readings.
$6.95

Technaflora pH DOWN

Technaflora pH UP and Technaflora pH DOWN help maintain optimum pH levels for your hydroponically grown plants.
$11.95 - $21.95

Technaflora pH UP

Technaflora pH UP and Technaflora pH DOWN help maintain optimum pH levels for your hydroponically grown plants.
$11.95 - $21.95
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