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BAC pH- is a pH regulator based on nitric acid to increase the acidity of the irrigation solution.

Very easy and simple to use, all you need is to add a few drops per liter and measure the resulting pH until you obtain the appropriate value for the type of substrate and fertilizers you are using.

Suitable for use during both growth and flowering stages and compatible with all substrates.


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The BAC pH- will help you maintain the pH appropriate to your crop needs

Type and Usage

BAC's pH- is an acid used to regulate the pH of irrigation water in cannabis crops across all types of substrates.

For crops with mineral fertilizers, the water's pH needs to be corrected after adding fertilizers and additives.

If you're using organic or bio-mineral fertilizers, you'll need to correct the pH of the irrigation water before adding the fertilizers and additives, as otherwise, the acidity change might eliminate the best properties of these fertilizers.

Plant Benefits

Adjusting the pH is crucial to ensure the proper absorption of all macro and micronutrients provided by fertilizers and additives.


Nitric acid 38%.

How to Use

Add a few drops of pH- per liter of water, mix well and measure the pH of the solution, repeat the process until you reach the desired pH.

La Huerta's Opinion

At La Huerta Grow Shop you can also find BAC's pH+ to increase the pH of the irrigation solution.

Data sheet

Type of composition
Mineral or chemical
Growth stage
Type of grow
Aeroponic grow
Coco grow
Hydroponic grow
Soil grow

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