Yellowish spots can't figure this one out

Okay so heres some info:
400w MH
temp: 84F RH: 49%
watering every 2-3 days depending on how fast soil drys up.
Is getting fresh air.
clones are 2 1/2 weeks old, used fox farm ocean forest soil when transplanted, no nutrients added yet.
This problem only appears on newer leaves so it seems like its a immobile nutrient issue.

Definetly some heat stress, 84F/29C is just too hot. Wether the abnormal colouring is due to heatstress I dont know, Bring your temps down to 24-25C (71-76F) and see if it goes.

i thought heat was the tips? hows your ph?

this saved my plants i'm sure it will help you

http://www.weedfarmer.com/cannabis/tables_guide.php

thanks guys ill look into all that, im pretty sure it was heat stress to because it was 98F for like a week... the plants were only growing during the dark. two of them look pretty good they have grown like 10" in two weeks but one looks like its stunting and is about half the size of the others. Im going to start them on nutes in a couple days and start topping off.

so i managed to get the temp down to about 80... I think thats as far as I'll be able to go. How big of an issue is it if the plants are at like 85-88F during flowering because Im sure its about to get damn hot around here.