I have been growing geraniums from seed for many years, but every year I feel I'm reinventing the wheel! This year I have about 290 plants growing under lights. I just realized that I ran out of the fertilome 20-20-20 fertilizer I've used for a number of years. I have some Osmocote smart release 14-14-14 plant food and am wondering if anyone recommends it for seedlings that have recently been pinched back. I'm trying to prevent buying something if I can successfully use what I have.