Hello. I have been having some problems with my grow and my setup is soil grow with 600w hps and led. Soil itself is very rich in nutes and started giving biogrow in week 4-5. All are Autoflowering strains and i just started week 7 on my grow. Mostly yellowing bottom leaves/tips and spots. I gave some water with ph 5- 5.5 (way too low??) and nutes with high nitrogen and some bloom nutes (biobizz) because i diagnosed yellowing leafs for nitrogen deficiency but i guess i was very wrong. I flushed my plants with cal mag pro and ph was 6.5.
Yellowing seems to spread to higher leaves. I have 3 other plants that are ok with no symptomps. Only difference is the nutes that i gave. Healthy plants got small doses etc.
So are these plants doomed or should i give them only water for week 7 and 8. Its about 4 weeks to harvest and i dont want to lose these babies. =/ I know yellowing leaves are normal when harvest is at sight but this is coming 2-3 weeks too early.