Leaves turning light green in patches on vanilla kush

Could anyone help me with this problem. This is the 16th day since i planted the germinated seeds.
My leaves are a bit patchy, they started going light green.
I have foilar sprayed them with a product called ocean sollutions mineralizer,(it contains over 80 elements from the ocean) but i did that with all of them and only 2 have the problem
I have been using a coolmist humidifier with filtered water on them to get the humidity up from 20
Temps are around 80 and humidity 50 to 60. They are under 4 55W PL-L lamps, got about 40,000 lux in there on the top leaves.

Could it be the mist?
Any suggestions would be appreciated.

could be ph

they look heat stressed

might be the stuff your spraying...might have stuff in it thats too much for them. If its full of salts and stuff could be that.

Yeah might be the salts in it, i don't think their heat stressed though, temps are around 78. Its strange how it has only happened to 2 of the 3 and they are all the same strain.