My first hydro experience

[Scottylikesbud]

I would think it might be some ph drift.
But those are some very leafy plants, shading the lower fan leaves from direct light maybe causing the plant to just drop those leaves.
I think this because in the background of one photo the tops exposed to direct light are looking healthy to me.
Here is an example of my ph/ nute burn in my hydro earlier this week

 

[Sueet]

I would think it might be some ph drift.
But those are some very leafy plants, shading the lower fan leaves from direct light maybe causing the plant to just drop those leaves.
I think this because in the background of one photo the tops exposed to direct light are looking healthy to me.
Here is an example of my ph/ nute burn in my hydro earlier this week

This is a starving plant, not one that has been nute burned in any way. It could be locked out from pH but it definitely needs food.