I read your comment and then looked at your other diaries. What type of soil are you growing in? I see most of your plants have/or had a Nitrogen deficiency.
Also, I believe you were under watering on this harvest, as 0.5 gallons every 3-4 days in flower is not sufficient. Plants in a 3 gallon pot/container will go through around 1 gallon of water per day. In veg, that is fine, but in flower your plant is using up a huge amount of phosphorus and not too much Nitrogen. Once plants go into flower, you cut back on Nitrogen, increase on the P-K (phosphorus and potassium ) . You can also increase and throw in some cal-mag as your plant will want more calcium as well.
There is a TON of "bro science" out there and although I implore people to experiment around first hand, if you want to learn; check out some harley smith youtube videos (Npk industries).
Good luck in your future grows.
@Dabking, Thanks for looking at my diaries, and the feedback. I appreciate you taking the time to reach out, and comment.
All my other diaries/grows are in Happy Frog soil, top-dressed with dolomite lime. I used dolomite lime this time due to a prior failed grow with the same batches of soil.
I think the last grow failed due to lockout/deficiencies, caused by my lack of experience.
This diary for Zkittlez Autoflower was grown in ProMix HP.
I will roger that advice on the watering starting today with the other grows. Per my experimenting with feeds, I intended to use 3 tsp molasses today (last used about 3 weeks ago), but after reading your notes I may just opt for nutrients that favor P -K today & CalMag instead.
I'll be sure to check out some Harley Smith videos on youtube, I recognize him from an episode of Mr. GrowIt.
Thank you again for the advice!