What are these problems?

Started about 5 days ago when I switch them into flower. The Auto is in 12 /12
Due to too many pots in my two tents.

Using MegaCrop and Bud Explosion from @GreenleafNutrients and happy frog soil.

These are two different plants.

1. Is Girl Scout Cookies Auto from Fastbuds

2. Is Badazz Cookies OG fem from seedsman


1


2

calcium

Over feeding

Looks like possibly Magnesium, the Bud Explosion has Magnesium in it, so you can boost up the dosage a little bit (maybe 1.5g per Gallon) and it should solve that issue

That's a clear cut issue with magnesium lacking. The first pic also seems to be that you are overfeeding either potassium and or phosphorus, which, may be locking out the magnesium, or you simply don't have enough mag. You're into flowering, add some epsom salt to your waterings.