Blue Diesel Advanced Seeds

Buds are coming on nicely. All filled in now and there's some fairly long colas. Did a bit of defoliation and bowl trained it a little. Plant has started yellowing more on its bottom leaves. Would have liked grow feed for longer, but it's been fairly slow. They were fan leaves barely getting any light at all so I'm not bothered. Plant only has two or three weeks left so will probably feed a couple more times and then start flush. There's also a very slight bit of light bleaching on top. Smell is starting to grow. This was a smelly plant last time I grew it. Hope it keeps getting stronger. Buds are very tall and thin. Other pheno had very compact and short buds with thick pistils. Day 61: just wondered what people's thoughts were on the last pictures. Nearing the end of flower so not too worried but wasnt 100% how I should treat this. K def? Ca Def? Or just nute burn? Leaves have been yellowing for a little while. Looking particularly at the scorch marks on the leaf margins. Seem to remember hearing that was more indicative of deficiency than burn which would normally just show at the tip.