Update: Earlier today when I noticed Stonewall to be recovering, I gave him just one pellet as a test. A few hours later his SBD appears to worse than ever, he is floating on his side with no energy, he is extremely swollen. Is it possible that the brand of pellet I've been using could be adding to these issues? Additionally upon closer inspection his fin shredding seems to resemble a more classic case of fin rot on his other fins.
It's time for a water change so I'm wondering about starting an aquarium salt treatment for the fin rot? Or would starting epsom salt be more beneficial because it's the preferred treatment for the SBD? Is it possible to treat both conditions at once, and if not which should I be attacking first?
Also, I noticed in one of the stickies a warning against using Bettafix, which has always been my go-to along with AQ salt in the past for treating tail biting or fin rot. What should I be using instead?