What nute def is this? I'm not sure what it is

Hi I'm using ffof mixed with fflw, I'm feeding it biocanna vega and they're 7 weeks old in veg. I'm pretty sure this might be a nute burn, but I'm not sure exactly what def it is, can someone help me with diagnosing this problem? The yellow is starting to spread and there's actually burnt holes forming, here's pictures.

There's also eagle claw leaves and rust spots so idk why that is either, can someone please help me out?

the yellow looks like nitrogen def. to me

Yeah that's what I was thinking, but I'm feeding it with a good amount on nitrogen, so idk if it's a burn or a def

Your PH could be off, preventing the nutrients from even being absorbed in the first place. You say you've been feeding it a good amount of nitrogen so it could also be salt build ups maybe? I couldn't say for sure though, Those would be my first guesses though.

I'm pretty sure it might be the ph problem, I'm plannin on getting a ph up solution, because sometimes the ph goes as low as 4.9....I know it's bad but I'm waiting for my check to get it, what do you think the whole claws mean? Heat stress?

Anyone else has some guesses?

Too much nitrogen. The dark green top leaves are a good indicator. You are probably overwatering. Stabilize your ph and think about using cal mag. The light is not strong enough for too long and yellow is what happens.