HELP

[Funkygrower]

why are the veins in my plants turning yellow/white??. I just gave them a small does of Advanced Nutrents grow,micro,bloom. Should I add in a small shot of some cal mag?. Using Fox Farm Happy Frog soil. Thanks

 

[Modest Grower]

First pic looked ok and then I saw the second. Not sure the there is an abuse chart that might help you though

 

[Funkygrower]

First pic looked ok and then I saw the second. Not sure the there is an abuse chart that might help you though

The first pic with the black pot is a different strain then the other. I've done exactly the same to both. Someone told me lacking sulfur