Growing (2) AK47, (1) Zkittles and (1) AH -all autos
Sprouted on 11/3 and showed pistils 3 weeks after
Biobizz light mix soil
Botanicare pro blend bloom nutes over a week ago at 1/4 strength 1-4-5
Wills 2000w Cree Cob light rated at 426watts 18/6
Temps in low 70’s
Lower leaves yellowing
I don’t have any meters yet to test runoff
Pics showing more of the plants
Last (2) waterings were with tap water.
Haven’t used Botanicare Grow in 2-3 weeks which is 3-2-4, not overwhelming high in Nitrogen
It’s normal for the lower leaves to yellow and fall of as the plant matures.
I would get yourself PPM and pH meters to avoid problems in the future. If they get out of whack, you’ll want to address it as soon as possible.
I agree with @MidwestGuy it’s normal during flowering stage. I also agree that you will need a ppm tds meter and a pH meter.
During veg if my lower leaves turn yellow it usually means the plant needs nitrogen