HYDRO calcium deficiency???

[nachokiller]

hello, im dealing with what could be calcium deficiency on my 5th week of flowering Bad Azz Kush, my top leafs are dark green and they are developing yellow/brown dots from what ive read calcium goes from lower leaf up, but this started up. so i just want to double check. Im growing hydro DCW, 600w led. Uploaded a pic
Thanks in advance.

 

[UrbZ]

[No message]

 

[Deadhead91]

This chart saves so much time, literally my go to, even saved it to the phone.

 

[UrbZ]

Me too! This and the leaf symptom chart as well..