Hey,
How far along is your plant? I might be able to help you out. I wouldn't recomend using the bone meal till you are flowering, but I can send you some and let you try that. Flush that soil. If you have only one plant, suggestion; get a different pot/bucket, wash some soil off real good, like every day for 2 weeks. Allow it to air dry, then moisten it and transplant, that should wash all the nutes out, one a 6 leaf set, I would venture to say that if you are giving it at least 200mL of water every other day or so, you should be fine. Then when you get some hairs showing, I would introduce about 2 tspoons of bone meal around the plant, and kind of work it into the soil. Then water as normal. You should notice a big difference. I don't mind sending you some bone meal, if you want me to. (Freebie). All I ask is that you post some pretty pics, and enjoy the fruit of your labor.