For Simplicity Sake, I just use Promix BX, and Sun Bulb Orchid Fertilizer.
They have both Veg/Flowering Formulas... NO Urea Nitrogen, and only the highest quality chemiacls, that are most easily absorbed by the plant.
They are also Endorsed by the American Orchid Society, have been in business for almost 60 years !!!
And also contains ALL Micros....Including Magnesium. Very complete, and Bioavailable.
The Promix BX also has 2 different sources of Lime, and Beneficial Bacteria. Nothing else needed.
I also have done organic many times.
For that I use with the Promix BX
Peruvian Seabird Guano/ Veg/Flower.
Azomite
Extra Lime/Hydrated.
Kelp
Bio Activator
With the Sunbulb... My Standard use is...
Veg x 2 tsp x 1 tsp Flowering Formulas Combined. Of course Less or even use 1 tsp Flower per 5 gallons water for early seedlings.
I feed at each watering.
When plants are taking full Veg Fert though, the Basic is 2 tsp Veg x 1 tsp Flower formulas.
In Flowering.. I Reverse it
2 tsp x Flower x 1 tsp Veg.
After Mid Bloom, Drop the 1 x tsp Veg