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General Hydroponics pH Up and pH Down Liquids - Stabilize Nutrient pH in Hydroponics, 1 qt. Bottles

  • Based on 15,319 reviews
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Availability: In Stock.
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Arrives Thursday, Aug 14
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Size: 1 quart


Style: pH Up & Down Bundle


Features

  • Liquids to stabilize nutrient pH in hydroponics
  • Includes pH Up and pH Down 1 qt. bottles
  • pH Up: base solution formulated with potassium carbonate
  • pH Down: acid formulation that uses phosphoric acid
  • pH is important because it affects availability and absorption of several of the 16 atomic elements needed for plant growth

Description

Stabilize your nutrient pH with General Hydroponics® pH Up and pH Down. pH is important because it affects availability and absorption of several of the 16 atomic elements needed for plant growth. Maximum absorption of these elements is found at pH readings 5.5 to 6.5. When pH falls below this range many of the macroelements (NPK) have less availability, and absorption of the micronutrients can reach toxic levels. pH Up is a base solution formulated with potassium hydroxide and potassium carbonate. Add a little at a time when your nutrient pH is too low in order to raise it to the proper level. pH Down is an acid formulation that uses phosphoric acid to lower the pH. Always start out with one milliliter of pH Up/Down per gallon. Wait 15 To 30 minutes, and test your water again. You will usually only need 1 to 2 ml of pH Up/Down per gallon of water. You may need additional pH Up/Down if you have hard water.

Brand: General Hydroponics


Item Form: Liquid


Product Benefits: Optimizes Plant Growth through pH Level Control


UPC:


Number of Items: 1


Brand: General Hydroponics


Item Form: Liquid


Product Benefits: Optimizes Plant Growth through pH Level Control


UPC: 793094000529


Number of Items: 1


Unit Count: 1.0 Count


Product Dimensions: 7 x 7 x 9 inches


Item Weight: 5.19 pounds


Manufacturer: Hawthorne Hydroponics, LLC


Item model number: VB00065


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Aug 14

This item is non-returnable:

Non-returnable. Transportation of this item is subject to hazardous materials regulation

View our full returns policy here.

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Top Amazon Reviews


  • Proper dosage to lower your pH
Size: 1 quart Style: pH Down
I tried to find an answer to dilution, how much to add, recommended amount and could not find it. I must preface this by saying your water, your system, your nutrient level, your pH, and your other levels WILL be different than mine. This is what I found out for MY perimeters. 1ml of this solution lowered my 3 liter hydroponic system by .5 pH and lowered my 5 liter hydroponic system by .4 pH. As the bottle says, start low - you can always add more. My recommendation is to get a good pH meter. I have an electric one and it does a great job. ... show more
Reviewed in the United States on May 25, 2025 by Amazon Customer

  • Great value and effectiveness
Size: 1 quart Style: pH Down
Fantastic, best part is that it’s very concentrated. My tap water is about 8.2 out of the faucet, and 1/8 teaspoon per gallon of water brings it down to 6.9-7. Highly recommend for any gardening application.
Reviewed in the United States on May 27, 2025 by Amazon Customer

  • It is really good I will be getting more
Size: 1 quart Style: pH Up
This is the only brand I've ever used I will not ever use another brand this one works so good I highly recommend this brand for your growing stuff
Reviewed in the United States on May 18, 2025 by Chris

  • Works nice
Size: 1 quart Style: pH Down
This works great. Small cap full took a gallon of 7.2 ph tap water down to 6.5. instantly.
Reviewed in the United States on May 24, 2025 by Ed S.

  • Worth Every Penny!
Size: 1 gal Style: pH Down
My favorite ph regulator each bottle is worth every penny.
Reviewed in the United States on May 21, 2025 by GB

  • Calidad
Size: 1 gal Style: pH Down
Exelente
Reviewed in the United States on April 24, 2025 by Yamil Nieves

  • Good deal
Size: 1 quart Style: pH Down
Arrived on time and good value
Reviewed in the United States on May 16, 2025 by Amazon Customer

  • Lowers ph well
Size: 1 quart Style: pH Down
Does th ej9b
Reviewed in the United States on May 11, 2025 by Forest Hill

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