Humboldt Nutrients Master A&B is a premium two-part fertilizer program designed for all plants made with non-toxic, high quality ingredients.
Are you using Master A for growing marijuana? Record it on your Grow Diary!
Looking to start using Master A for Cannabis? Find the Lowest Price here!
Liquid (ml/l)
N-P-K / Micro-elements Nutrient
Non-Organic
Day-to-day Solution
How to Use Master A
If you damaged the label or have not purchased the product yet, you can refer to the information found below to help you understand how to use Master A. If you are mixing your own nutrients, you can reference the NPK chart found below to help you identify the role of this nutrient product. The recommended feeding schedule for can be found below to help you understand the correct measurements of nutrients to use. The feeding schedule chart has been provided by Humboldt, the product manufacturer.
Master A NPK Chart
When combining nutrients, you will want to be conscious of their NPK contents as well as others. You can look at the contents of Master A using the chart below.
Master A Feeding Chart
Below you can find the recommended feeding chart provided by the nutrient company. To avoid hurting your plants, we recommend starting at a slightly reduced dosage and working up to the recommended dosage at a pace which you are comfortable with.
Humboldt Product Line
Take a look at complimentary nutrients which are also available from Humboldt. These products will compliment each other, or serve different purposes.
View all Humboldt Products
