My regal angel has been having frayed fins for three weeks now. He's been eating well, no white spots and acting normally. But he's still having frayed fins with little progress of healing. My question... is there any way I can help speed up the healing process of frayed fins? Is this a bacterial/viral infection in which treatment rely only on the immune system? Will water change, additional stress coat, garlic soaked food help in curing frayed fins?