Yes, he's still in the triple sulfa. The weird thing is that his tail hasn't really gotten shorter. It just keeps getting tears in it. Some of the tears seem to be deepening too, but I'm not sure if that's from the filter. It was meant for a 20 gallon so in some places it's kind of powerful and I can see him straining. He does have some quiet areas too.
The edges of the deep gashes are blue and don't really have any black. His tail seems kind of clear at the ends if you look at it hard but it's kind of hard to tell. I look at him along time every day, but I just can't tell if he's getting better or worse.