Man, scratching my head. I see the spots but tiny bit hesitant to agree it's ich because I see nothing on fins, it's not as white, and sounds like more is going on than ich.
Ich is easy to cure without meds (heat)... sounds like you already turned up the heat. Make sure to add more aeration but in the meantime I'm taking a step back to see if someone else more knowledgeable steps in.