Ive used a 10-2-2 solution, which is in the form of baby bio. I didnt think that they would require much as the soil looked to be very fertile.

However tonight as an experiment I have gone with what you said, on one of the 6 I have growing, and given a nice helping of what I currently have. Will monitor this one and see if there are signs of improvement, I beleive this will be visable in 3 - 4 days if correct.. it is all learning for me tbh at present.