Help Needed with yellowing issues. DWC.

Greets all Im getting some yellowing issues, I was thinking it looked like a calcium or magnesium issue. I'm thinking maybe it is because I made the ph sit at 6.1 to long, from doing some online reseach a ph of 5.8 is when the plants take up the most calcium and magnesium? Any help is much appreciated..

Dwc
Ph 5.8-6.0
botanicare flowering pro blend 2-2.5-2
Cal-mag 2-0-0
AN budcandy
AN Nirvana 0-0-1
Rapid roots 1-0.5-1
Pk boast 0-15-15
LeD lights 180w and 240w
Changing res every week

Sounds to me your plants need nitrogen are they budding and what kind of food are you giving them

Just added the pictures thanks for the reply btw.

I grow outdoors when I went to check my plants they where yellow gave them food greened back up I give my plants 20 20 20 for vegging and 15 30 15 for budding

Thanks for the heads up.

Any other feedback?