Strain cotton candy Ffof 30%perlite Shes about 11 weeks old. On week one of flower 78 degrees 50%rh 12/12 Ff trio, beastie blooms, cha ching, haven't given her the BBC or cc yet. calimagic, .5 tsp recharge 2x week. All water ph to 6.3 -6.8 About 10 days ago my cotton candy girl started showing signs of different deficiencies. So did a lil flush and get runoff was a ph of 5.1!!! Continued to flush until I got the ph to come out at 6.3 ish consistently. Gave her 1/4 strengths foxfarm and 5 ml calimagic. She seemed to have been turning the corner. Last night I checked her runoff and was a ph of 6.1. Gave her half strength fox farm trio. And today I walk in to leaves rusted and curling. I've done lots of research and believe to be phosphorous def. At this point i am great to pull her out and check her root?. Any help or suggestions would be greatly appreciated.