Medium filtered light, fertilizer and water twice a week during the summer (20-20-20)....once a week during the winter (10-30-20).
Jasen is right on this (he must be, it's exactly what I do).
You'll love yours, my amazonica almost never stops blooming. I find them to be pretty easy growers too. I'm also going to try to get an Amazing when I do some buying this spring.