CalMag or is it another of my famous newbie dumb*** move?

[Lacey]

I have searched the other threads to see if I could avoid the embarrassment. Nope, It gets more confusing as I read. Since I am a straight up woman... I own my errors. I do not having a green thumb, It is more like a dead thumb.

What the heck did I do or not do this time? The more upfront the better... But be nice.
Strain: GG and yes, She is Pissed Off.

 

[mysticepipedon]

What's your soil pH? Oh yeah, and is it soil?

 

[Lacey]

What's your soil pH? Oh yeah, and is it soil?

Grow pots with Soil, pH is 6.3

 

[Lacey]

She has decided to go into preflower with several others.
We had a over watering issues which created lockout. The pots have been dried out and all plants new growth is looking good, other than the GG. The new growth is green, but it doesn't last long before it starts to follow the older leaves.

 

[mysticepipedon]

The pH sounds good.

That looks like magnesium (Mg) deficiency. Adding Mg with calmag might help, but Mg uptake can be messed up if there's too much potassium or calcium present, so it might be a better idea to use epsom salts dissolved in water.

 

[testiclees]

I suggest first applying a foliar dose of epson salts solution then next watering give like 5 grams of gypsum 5 gms of calcium carbonate to a gal of rain or low ppm water as a soil drench.