Greeting
I am trying to make my own nutrient solution. I have a friend who works on hydroponic tomatoes plantation and I can get some raw nutrients.
I grow in soil, humus and perlite. During the veg period I add a little aloe, silicon, fulvic. Without NPK nutrients. And I water with tap water.
I have combined some formulas, but to get a good amount of NO3, I need to use calcium nitrate and magnesium nitrate.
I also have an RO filter and will use it with that fertilizer.
Maybe the introduction was unnecessary, but here it is, to describe the situation.
The question is how much ppm of calcium and magnesium should I include in fertiliser.
RO water, K ppm is about 200. Later in flowering I would raise it with potassium sulfate
Thanks