Nutrient issue

[BB0420]

I am having some nutrient problems it’s seems. I am using general hydroponics 10 part flora series. Currently my pH is 5.9 and my ppms are 640. My water stays at 68-70. My environment is 70-76 degrees and humidity is 50-55%.

Let me know what you guys think. Thanks

 

[Nunyabiz]

That almost looks more like light burn.
Might be a touch of magnesium deficiency in there but really looks to be more light related.
Kinda hard to tell from pics though

 

[BB0420]

You think I have my lights to turned up? I have Mars FC6500 they’re mounted 22” from canopy and turned at about 70%. Maybe I should dial back to 50%

 

[Nunyabiz]

Be worth a try, if its a mild light burn that little bit will actually turn back green usually.

 

[BB0420]

Yeah I’m feeding the recommended calmag from general hydroponics. 2ml per gallon