Please help diagnose these plants..

[MrCowbell]

One has turned all yellow and the other has white powdery spots all over the leaves. Spider mites?? I water them twice a week with KIND grow and base, along with Advanced Nutrients B-52..

 

[Blazin Waffle]

Need pics

 

[KingJoe83]

Yellow on leafs or buds?

Yellow on leafs could be heat stress burn nitro? Or cal mag def

White powdery spots could be pest or mold? Pics would help a lot liek blazin over there said.