Do you have a diary for this grow? - Never mind, I found it.... You have no information in it about what nutes you've been giving her and this is probably critical. That being said, I'm going to agree with Organoman here - it's a potassium issue, not phosphorous ... and you definitely are NOT going to see the yellow leaves turn green - especially after only one dose...
You might want to consider sprinkling a tablespoon of Langbeinite on top of your soil (done once a month throughout the grow avoids this deficiency) ... it's got a NPK of 0-0-22 and should help considerably...
Good luck...