Thank you all!
My farrier is meeting the vet out on Monday at the farm to discuss what he thinks it could possibly be with vet. He has not had the best foot care from previous owners and vet said he needed to be trimmed before we were able to take x rays on tuesday anyways.
The crack does not appear to cause him any pain, and though that triangular portion is fairly deep, it seems to cause him no pain either. I will look into fungal treatments .
Forgot to mention, another thing that had me thinking it was probably caused by a mineral deficiency was the fact that he had also blown an abscess out his back right. It almost to the toe line, and is growing out, but it left a pretty big crater.
Vet also said he was suffering from long toe, low heel but I am familiar with treating that as we did the same thing with Drifter when I got him.
Good to know that all he probably needs in some good hoof TLC :) Thank you all