Status update.... Doesn't seem to be improving at all, looks like the problem is spreading to newer sets of leaves too.
Also I did not trim any of the damaged leaves so I can avoid spreading the problem like you said
@Pennywise .
I did take
@CagedApe advice and started using tap water.
Ph 6.2
Fox Farm Big Bloom 14ml/g
Fox Farm Grow Big. 14ml/g
CalMag. 5ml/g
Rh 60%
Temp. 25C / 77F
Lights 18/6 was previously on 24hrs until 3 days ago.
Please help! I need to flip to flower or ill have space issues down the road!