DJ - As plants grow bigger and light to the lower fan leaves is obstructed by the new upper growth, it's natural for some of the lower fan leaves to die-off. Are you sure this is not what you are seeing?

What kind (brand) of pH meter are you using? Do you calibrate it? (Probably a silly question to ask you, but it never hurts to check.) Have you ever checked your meter readings against a liquid pH test kit?

How much CalMag+ are you using? Are you up to full recommended dosage? CM+ is 2-0-0, so it can be an important source of N.

Quote Originally Posted by Weedhound
I have to completely agree with Stinky. Frankly, I'd be ashamed of myself for wandering around saying things that are so off the mark for my OWN self respect and that's completely putting aside telling someone to do such a thing without caring anything about their grow.
A troll is a troll is a troll - they feel no shame or pity. Their only pleasure is from the negative reactions they cause and the peripheral damage they may do if someone is foolish enough to believe them.

PC :smokin: