I don't think so, I've dealt with septoria, I look for a black ring around a brown spot but I don't see the classic presentation on that plant, what's your humidity been like?
Agreed does not look like fungus. I would look at humidity like suggested and possibly ph or over watering.
Best if you provide all the info you can. Temps, lighting info, media, nutes, watering practices, humidity etc. As much as you possibly can. It will help others help you
Thanks. I'm using coco coir, first grow. Humidity is likely too high going between 68-75. I have a dehumidifier but it's not doing much. Temp is around 70-73. Nutes are advanced nutrients ph perfect