nb', is this something you added into the coco beforehand, then added another dose? ...are the main symptoms on upper leaves mostly? I suspect a micronute defc., very common in organics from what I see,... Are you using any Si, humic-fulvic, or inoculants? Coco is so bitchy at times, I'm less and less interested in ever trying it! I know it has it's upsides, but seems to me that's mainly when it's run close to a hydro-type medium-- constant feeding, lots of run-off, monitoring input and r-o pH and ppm's.....
Autopot folks seem to do well with it though-
....
.... beautiful Kush cross mate, nice and silvery!
... Affy x BLSR is looking stellar too,... funny, one of our very first Admin guys, JM, was just talking with me about an (A5 x Malawi) x BLSR cross he's going to run.... Those BL's are some disturbingly $$ seeds, if one wants to buy them! $500 for a 10-pack =
...... this cross, is that what's carpeting the tent floor in there?