The Fox Farms trio is what you'll want.
Grow Big (growth stage) and Tiger Bloom (flowering stage) have all the nutrients and micronutrients you'll need, the Big Bloom is a catalyst tea formulated to compliment the other two.

Here's the FF feeding schedule:
Fox Farms Weekly Feeding Schedule

Like Cigarettes42 said...The nutreints in the Ocean Forest should last a few weeks, but never add nutrients to a seedling till the appearance of 4 or 5 sets of true leaves.
Rusty Trichome Reviewed by Rusty Trichome on . Nutrient advice :pimp:I am using fox farm ocean forest soil, and fox farm grow big, 2 tsp per gallon for my young plants is this all the nutes they need, and do they need anything else when they get taller, I will up the big bloom to 3 tsp but do these need other nutrients? When they start the flowering stage I have fox farm big bloom to give them, is this the only nute they need for this cycle. Thanks this is my first grow. Rating: 5