New Grower Browning yellowing leaves.

[some_guy_]

Anyone have any tips on what this might be?

Coco 60/40
pH is 5.8,
nutes is house and garden Coco a+b ,
humidity 60%
Temp 24c
Age 5 weeks or so
Lights 18/6 mara hydro fce 6500, on about 70% intensity

Thanks everyone, love the community here.

 

[durbanpoisoner]

What’s your feed EC and runoff EC?