what bat guano are you using? they vary wildly in nutritional content.

to me they appear to be nitrogen deficient. it looks as if it first showed in the oldest growth and is progressing up the middle, yet to touch the new growth. this is a classic sign of a nitrogen deficiency. treat with a readily available source of nitrogen. yes i know you are in flowering, but nitrogen is still used during flowering. i assume you are trying to stay organic?

you are in oregon? when do you think optimum harvest time would be?


-shake