it happens dude all the avalable nutes. were used up to make new leaves. i would trans plant asap. if you want some decent buds unless its there for looks and smell what lights are u using? it looks like a windowsill project.because of the strech? my observation.

im not frm uk but theres blood/bone meal, bat guano, worm castings,fish emulsion, im sure theres a couple more cant think of right now.