Magnesium deficiency or what am I dealing with?

[Wyodub]

Galactic Guava from Elev8 seeds. Around week 2 of veg. Organic soil in 30gal fabric pot in 5’x5’ with KindLED 750. This past week it’s been kind of wimpy and started showing signs of problems in upper leaves. What do you all think I’m dealing with here?

 

[RGWD0202]

Hard to tell with that photo. But possibly sulfur or calcium but guessing sulfur.

 

[Phyto]

I'm not really seeing the issue, what's the concern? The new light colored growth is pretty normal.

 

[LoveGrowingIt]

I also don't see a problem, except maybe overwatering.

 

[Wyodub]

Thanks for the input. I thought I was seeing the leaves light in color but veins dark. But the more I look at it maybe it is just light new colored growth. Over watering is potential. I’ll pull back and see what it does over the next few days

 

[extractoilminussixty]

I go by the weight test on the pot 70% less pot weight, I water until it slowly starts throwing out the bottom stop
The only time I change, for instance, on Auto’s day 55 through 75, I lightly re-water the top of the pots two or 3 cups let that dry out, then saturate again and repeat the process.
If anything I have learned auto flowers, actually consume a lot of nutrients, much more than we have been told.

 

[Phyto]

I go by the weight test on the pot 70% less pot weight, I water until it slowly starts throwing out the bottom stop
The only time I change, for instance, on Auto’s day 55 through 75, I lightly re-water the top of the pots two or 3 cups let that dry out, then saturate again and repeat the process.
If anything I have learned auto flowers, actually consume a lot of nutrients, much more than we have been told.

I have also found them to be very greedy feeders, once established.