Deficiency problems??

Update on the critical purples. Today I woke up to discover a few spots on one leaf, I'm hoping it some kind of watering burn.Temperature currently holding at 73 Fahrenheit along with RH 45 to 50%. I have been giving the plants Cal Mag for a little over a week now. Still using half dosage of recommended Fox Farm Nutrients. They seem to be taking up the water Every two days. I also entered fish shit into the soil.Future updates On spots next Entry.