Asking for fertilizer recommendations is like asking everyone who their favorite sports team is, you get lots of different answers. That being said, I use Dyna Gro's Foliage Pro (one part complete fertilizer) and Pro Tekt (silica supplement). Both products from beginning to end. Using RO water and Pro Mix, I start at 1/8th tsp per gallon of Foliage Pro as seedlings and incrase 1/8th tsp per week until I top out at 3/4 tsp per gallon. The whole time I feed 1/4 tsp of Pro Tekt. Both products are pretty cheap compared to other brands and less stuff to mix.