I assume you want your plants to grow and be healthy from the first day you plant them. That means you want to provide everything the plants need to grow well, right from the start, not 4 weeks later, after they have begun to starve and die. If you look at the list of threads for this forum, the first one is Fertilizer and Water Parameter FAQ's. Click that, and the first thing you see is a link to a thread on dosing fertilizers. There is where the answer about what to dose is.