hey all got a fast developing problem. my leaves are going yellow from the bottom up even on the young shots they are going yellow from the bottom up. she is mango strain from nl she is in veg 6 weeks old she has been transplanted into full organic potting soil because the soil it was in had a slow release fert and she was getting killed by to much nutes. i feed every third watering using the stuff that is pictured and i have only just taken 4 clones from her but this prob has been developing for about 3 weeks.she gets watered with rain water which i adjust ph to 6.7 using a few drops of white vinegar. what do use think the problem is.