k im using Fox Farm Ocean Forest soil. will i ever have to use more nutrients? and if i do how much do i mix into the water before giving it to my plant?
"I" don't find any need to feed fox farms OF soil for 3-4 weeks. As for "how much" to add, depends on the nutrient/brand/ect. I've yet to see a fertilizer package that didn't include instruction on it's use. Most folks will suggest that you start with 'no more' than half of the recommended dosage and see how they react.
There's a search feature in the toolbar near the top of the page, that you will find invaluable for finding feeding schedules of various nutrients, along with answers to just about any question that you can think of...