MY PHAL ORCHID HAS BEEN GOOD UNTIL NOW!! ALL OF THE BUDS HAVE BLOOMED EXCEPT FOR ONE. IT HAD FOUR HEALTHY LEAVES UNTIL NOW! ONE OF THEM ON ONE SIDE THE BOTTOM ONE .. FIRST HAD A BLACK SPOT THEN TURNED BROWN , THEN THE LEAF IS TURINING YELLOW, AND SLIGHTLY SHRIVELED AT THE END? I DONT KNOW WHY ITS DOING THIS??