potpimp
Sector 5 Moderator
I just mixed up a new batch of nutes and pH'ed water this morning. 6 hours later and I'm seeing these little spots. I don't have a pH meter that works (I have two but neither of them work) so I had to guess at how much pH down to add. The first two pix are possible problems. The third pic shows the overall plant with somebody's hand there for scale.