It isn't a torn fin. It is a ... gash... across his upper "back" just in front of that fin on the top. The gash looks a little "fleshy". I'm not sure how I'd get a picture of him. He hides in his hole more often than not. He was out swimming this morning when the food went in and ate well (then back to his hole).
Don't let my use of technical terms intimidate you
As for the Tang, I can barely see his gills move now (which makes it really hard to see how fast he's breathing).
In an effort to reduct the stress on the fish (the Tang in particular), I've added 2 more pieces of dry base rock to form a cave in the QT
. The tang loves it. Hopefully the reduced stress will help his healing.
I can't thank you guys enough for being here with me step by step through this.
pH this morning was 8.1, salinity holding steady at 1.009