Secondary And Micronutrients
When it comes to secondary and micronutrients you want to use them more sparingly. During the second week of vegetative growth you should start adding in secondary nutrients into the equation.
These should be used at about a ΒΌ of the bottles directions. Like with the vegetative feeding plan you may need to make adjustments using the trial and response method you have been using up till this point. Secondary nutrients should be used every other week in order to ensure healthy growth.
Now onto the micronutrients which will be added once every two weeks and again you will need to try the trial and response to get the exact numbers you want.
Basically if you have been keeping up this far through the steps you should have noticed that yellowing typically refers to needing more food, green is the healthy state you should look for, and browning means that your plant is burning because you put too much food.
For cannabis the food is typically too strong and that is why the trial and response technique is really the best way to figure out where you need to be with the current strain you are working with.