Nute burn?

[710Ninja]

Hi guys,
I have about 20 AF's going at the moment. I recently gave them a diluted feeding of FF's Big Bloom and Tiger Bloom a week into flowering.

Since then some of the leaves on my plants are turning brown and even black in some spots. Some of the leaves shriveled as well...

Is this nute burn? Will a proper flush with 6.5 Ph'd water help? Any advice is much appreciated.

 

[NuttyProfessor]

natural light pictures will be better , looks like cal/mag problem , growing under led the plants thrive for cal/mag , you need to add ot your feeding program , but feed it the calmag between the other feeds

 

[710Ninja]

Good deal! Ordered the cal-mag and flushed them last night. Thanks for the advice.

Your colloidal silver thread is amazing by the way!