I have seen few spots on my tangs but all the fish in the tank are eating like a pig including tangs. No one is getting bullied or showing any signs of stress. Should I be worried or should I raise the temperature to help with ich? My temp is set to 78. I was thinking to raise the temp to 81-82. Please help because I don’t wanna lose my tangs, they eat off of my hands and I’m really attached to them. And NO I don’t have a QT because I don’t have enough room in my apt