Mate imo they don't look like they need nutes... they look proper stressed out ! .... What's the Temperature like day next night also the temp of your water your feeding them ? Are you letting them dry out before next feed ? With out more info on how your growing them it's hard to say what...
In your experience would I gain anymore yeild than I already have waiting an extra week or so ? .... and yes good point let's not get into that then lol .
Confused.com
Any reason you don't flush ? ...
My first flush I checked run off with ec wand and it went off the scale! .... second flush ec was 1.6 so glad I started tbh otherwise if I continued with notes I probably would have cooked them ... I must of been doing somthing wrong though anyway...
I don't mind hanging on a couple more weeks but I have started flushing already, by looking at my picks do you think my girls could hang on that long ?