I want to create my own marijuana nutrient system
Creating a nutrient system is more complicated than just adding “Nitrogen,” “Phosphorus” and “Potassium” plus all the various micro-nutrients in certain ratios. There several different chemical compounds that provide each of these nutrients and they’re not all equal.
For example, the following compounds all contain Nitrogen (Nitrate) in a way that’s available to plants: Calcium Nitrate, Cobalt Nitrate, and Potassium Nitrate. However, none of these compounds can provide nitrogen by itself; they also provide other elements like calcium, cobalt, and potassium. So it’s important to pay attention to these other nutrients being added to make sure you end up with the right ratios in the end.
To make things even more complicated, different compounds can interact with each other. For example, the Nitrate Nitrogens like the ones listed above become more available to the plant if a tiny amount of Ammoniacal Nitrogen is added to the mix, but Ammoniacal Nitrogen isn’t good by itself.
If you want to learn more about mixing plant nutrients, the Hydroponic Handbook has some great information on how to mix up chemical nutrients with a focus on making nutrients for hydroponic mediums like DWC or coco. The rest of the book is “meh” but the section about mixing nutrients really breaks it down better than any other source I’ve seen. It even includes the mathematical equations you need to make sure everything adds up and avoid unwanted reactions. At the time of this writing, you can read it for free if you have an Amazon Prime account!
Another well-rated book called The Handbook of Plant Nutrition is partially available to read for free on Google Books (though unfortunately, some sections are missing from the free preview). This is a really great book packed full of info about how different minerals affect plant growth. In fact, it’s actually used in classrooms to teach about plant nutrition! Unfortunately, the full version costs an arm and a leg. This is a good choice if you want to really learn the ins and outs of plant nutrition, backed up by science!