Deficiency in early flower Auto Sweet Tooth

[Slothman]

I have 3 Auto Sweet Tooth plants that all seem to have the same issue,

RH 50 to 55%, 81F on 74 off, cyco nutriants, 600watt HPS and 315watt CMH in different tents both same RH, CMH tent is 2 degrees cooler lights on, soil fox farm ocean Forest, pH is high 6, I feed at 6.3

 

[Jamfen]

Hey Slothman ... check cal/mag deficiency, looking very much like it to me , however im no expert .. do an internet search on it first to make sure then take appropriate action ... good luck m8 .