This video shows how to feed your orchid for best results and repeat blooms. Besides light, water, humidity and temperature requirements orchids need a good fertilzer, to get not just a healthy plant but spectacular blooms.
Most home and garden retail stores stock this fertiliser. I have mostly used orchid fertiliser ( Shultz) and for 5-6 waterings when the plant was finished blooming I used Miracle Gro. Mostly fertilsed every watering ( 7-10 days) and skipped fertiliser one in four waterings.
My plants are one year old and were bought in bloom, rebloomed after cutting the spikes and now have new primary spikes. Enjoy!