middle and lower leaves yellowing and dying

[depetreono]

I was thinking it was one of those 2 before but didn't want to solve for the wrong problem and make it worse. I learned about my lighting so if nothing else I walk away with more knowledge then I entered with.

 

[The Hemp Goddess]

Do you think my t8 will be good for veg then an hps for flower? The output is the same as a t5 just not as energy efficient.

T8s do not put out the same lumens as T5s.