pH Pro Adjusters

Highly concentrated General Hydroponics

When you’re growing professionally, only Pro pH adjusters will do. At nearly 3x the concentration of our retail adjusters, Pro pH Up and Down deliver more power per pint to make balancing nutrient ratios in hundreds of plants more efficient than ever. It’s possible thanks to a unique, non-mineral formulation designed specifically for commercial facilities, and sized for them too. Get Pro pH Up and pH Down in 2.5 gallon, 6 gallon and 55 gallon bottles.

Introducing new, professional-grade pH adjusters from General Hydroponics. Use Pro pH Up or Pro pH Down to effectively adjust the pH of nutrient solutions or irrigation water. General Hydroponics Pro pH adjusters are highly concentrated and available in commercial sizes.

Our Pro line features completely revolutionized technology versus our traditional, smaller-sized adjusters. New, non-mineral based acids and bases will not add nutrient value like phosphoric acid or potassium hydroxide can. Pro pH Up and Down also carry a triple zero HMIS® score. Plus, their non-corrosive and non-caustic (Pro Up) formulas mean there are no HAZMAT fees to ship like with other adjusters. Use Pro pH Up and Pro pH Down to effectively adjust the pH of nutrient solutions or irrigation water in large-scale operations.

pH Pro Adjusters

Will not contribute fertilizer 

Did you know that traditional mineral acids/bases add nutrients to your solutions? Excess or unbalanced nutrients can often do more harm than good by reacting with other nutrients or limiting uptake. 

Pro pH UP and pH Down’s non-mineral formulations will not add extra nutrients, ensuring carefully constructed nutrient recipes are maintained at all stages of growth.

pH Pro Adjusters

Unique, non-corrosive formulas

General Hydroponics Pro pH Up and pH Down are non-corrosive (Up is also non-caustic) and carry a zero rating for all HMIS categories. They are also not HAZMAT listed like many competitive products, minimizing expensive shipping fees.

pH Pro Adjusters
pH Pro Adjusters

3x stronger than GH hobby options

Professional-strength pH adjusters are a must for professional growers, but can be difficult to find in commercial sizes. General Hydroponics Pro pH Up and pH Down are nearly 3x as concentrated as our hobby/retail versions, and are available in convenient sizes for growers of all sizes! 

For use with


  • Hemp
  • Vegetables
  • Herbs
  • Fruits
  • Flowers
  • Other high value crops


  • Rockwool
  • Potting mix
  • Coco
  • Peat lite mix
  • In-ground soil
  • Water culture


  • Indoors
  • Outdoors


  • Intermediate
  • Expert

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