Feeding your plants by using the proper feeding schedules is as important, if not more important, as using the proper nutrients. Following a good nutrient regime and keeping it simple will go a long way to ensure adequate uptake of all the essential nutrients. It is advisable not to use too many formulations as it may be very difficult to trace the exact cause of the problem if there are many additives and supplements in the nutrient mix. See below for nutrient feed schedules from different brands:
PH PERFECT NUTRIENT CALCULATOR by AdvancedNutrients.com
NUTRIENT CALCULATOR by House-Garden.us
Atami BCUZZ Nutrient Shchedule (PDF)
Dyna-Gro – Feeding Schedule (PDF)