I'm quite new to it all too, Trisha, and had that "browning effect" not too long ago. Was yours already before the blooming even started? Ive heard from several people that thrips could be the cause of this. What you can do to test this out is to shake a bloom over a piece of white paper and see if anything falls out that crawls. I hadn't had a chance to try this out back then since I heard about it after the fact but its definitely a good thing to know to test for if the brown edges occur again.