Well the yellow leaves are now getting brown patches, dying and curling, spreading to other larger fan leaves.
She still looks mostly dark green, like as been mentioned, I'll stick to the plan and see how I get on. Hoping for the best, she is starting to smell a bit more, so that's encouraging.
One thing that's puzzling me,
I am using organic nutrients, I didn't think you could overfeed with organic nutrients.
Also I only upped the feed by 1ml, so she got 6ml of bio pk in 3 litres of water.
It does look like the last feed has upset her though.
I use organic nutes on my balcony, over feeding happens, as with over watering the results are the same, dying leafs,
if a few days of drying out and less watering with only plain water doesnt do the trick, and Bobs advice doesnt help, then start looking at other possible issues. Gotta have patience when trying to find issues, so many problems look like other problems.
Over watering can be either too much at a time or too often (and the effect is very similar to under watering)... in which case a bit of root damage might kick in, add some extra nutes to that and the cascade effect starts to happen.
checking the weight of the pot by lifting it, is the best way to know if it needs water imho, if its light give it a slow watering, give the soil time to absorb the liquid bit by bit
If it feels heavy and cool/damp dont water.
if it looks like the last feed upset her, thats where you start your thinking, possibly a bit too much, so a couple of of plain water days will fix that.
gotta remember its a weed, in the wild it grows in some of the most inhospitable places and still gets through its life cycle.