What's going on here?!

[GraphikRevolt]

Strain is Xtreme Haze and its coming up to about 2 weeks in veg.
I've been noticing the slow formation of yellow blotches which then turn brown, curl and crisp. It does form slowly on some leaves, but on others can spread a little quicker. What is this issue though? I have been dosing cal mag at full strength for the past 2 feeding, (thinking it would clear up) but have since woke up this morning and noticed its presence on another large fan leaf.
Grow tent: 2x4x5
Temps for day: 77-79....drops to 75 at night
RH: bounces around 45-50 however gets up to 80 at night
Growing medium is FFOF
Nutrient line: Advanced nutrient ph perfect grow, micro, bloom also hitting up some voodoo juice and cal magic
Soil ph is sitting at around 6.8 for all 3, and ph of water when feeding sits around the same.
Lighting is 315 CMH about 2.5-3 feet away from canopy.

Pics 2 is a little off colour I know I should have shut off the light but didn't wanna have to wait 10 min for my light to realistically be okay to start up again. (Lazy....i guess)

 

[Shoanxi]

Strain is Xtreme Haze and its coming up to about 2 weeks in veg.
I've been noticing the slow formation of yellow blotches which then turn brown, curl and crisp. It does form slowly on some leaves, but on others can spread a little quicker. What is this issue though? I have been dosing cal mag at full strength for the past 2 feeding, (thinking it would clear up) but have since woke up this morning and noticed its presence on another large fan leaf.
Grow tent: 2x4x5
Temps for day: 77-79....drops to 75 at night
RH: bounces around 45-50 however gets up to 80 at night
Growing medium is FFOF
Nutrient line: Advanced nutrient ph perfect grow, micro, bloom also hitting up some voodoo juice and cal magic
Soil ph is sitting at around 6.8 for all 3, and ph of water when feeding sits around the same.
Lighting is 315 CMH about 2.5-3 feet away from canopy.

Pics 2 is a little off colour I know I should have shut off the light but didn't wanna have to wait 10 min for my light to realistically be okay to start up again. (Lazy....i guess)

That is salt toxicity combined with too high a concentration of Calcium causing Magnesium lockout. Flush and try balancing your nutrients to the tone of a lot less and should be ok. Those are however the first signs of total loss so flush right away!

 

[OldMedUser]

If you're already feeding nutes in FFOF this early you're burning them up like @Shoanxi said.

I'd flush some pH 6.5 water thru to reduce the available nutrients a bit and see how they do on their own for a couple weeks.

Maybe read up about growing too.

I found a great spot to download FREE POT BOOKS . I downloaded a grow bible first and got lots more. Books look great and complete like the real ones I have here. No web site but just a page of links. Just right click on what you want and then "Save Link As" to download so they don't open first as many are 50+ megs. They got lots. Enjoy.

 

[GraphikRevolt]

Thanks guys! Much appreciated! Ive been doing a stupid amount of research, thought i had 'er all under control. I had read that when the true leaves showed themselves was when i started to introduce the nutrients, was I wrong in doing this?( just for next time) or am I just having this issue because FFOF is already hot? I was able to flush before work today. Im also gonna hold off on nutes for a while

 

[OldMedUser]

FFOF is considered pretty hot and you don't need to start adding nutes for quite a while depending on how big the pots are. Many go 2 months in bigger pots and don't start adding nutes until ready to flower.

I use AN too but with ProMix HP that has no nutes so they only get what I feed them. Go easy on the nutes when you start like 1ml/L of each at most in that soil. I'd wait until you start seeing old fan leaves beginning to yellow before adding some then you know the plants have used up most of what's in the soil. Better to be a little low than too high as you've seen.

Good luck!

Going off line for a while to trim some Hindu Kush bud tonight.