Hey guys im trying to get fertilizing down and I think I am sold on the Dyna Grow Foliage Pro 9-3-6 with a lot of micro nutrients in it. I have seedlings still that i have been watering with small amounts of fish emulsion. When is a good time to switch over to the dyna grow, when i put them in 4 or 6 inch pots? Someone fill me in on the product if they have used it before. Thanks guys.