Just follow the feed chart my friend if its quite confusing then too bad should of chose our nutrients ;) I joke lol Most people say to half what it says on the bottle but in my experience like the other grower has said i think its best to go by what they say as they have already done it for you thats the purpose of a feed table lol if it seems too much dont worry all these elements work together building a really good mixture just remember to mix thoroughly after adding each one :) best of luck