Chlorosis/other deficiency with nute burn?

Hey CutCopyCat. Thats dedinitley a magnesium deficiency. The fastest way to cure a deficiency is to feed them with epsom salts via foliar spray. I would put spme kelp extract (if you have) as it contains certain hormones and nutrients that help with stress aswell as some epsom salts in a foliar spray at an EC of 0.9 at a pH of 6.0. Another thing you can do to rapidly accelerate the recovery time is to turn the lights off two hours earlier. This helps the plants recover faster because they photosynthesize less (similar to eating when you feel sick, you would rather have bedrest than eat a big meal) Turning the lights off will really make everything change for the better. Goodluck and happy growing!