ok, i came home today to see that the temps were up to a scary 90 degrees. i threw in ice bags asap and all. so far so good but some reason the powder blue tang has all these white spots all over him. i've had him for a week now and he was doing fine till today. im thinking the heat is what brought this on. the other fishes aren't showing any signs of these white spots. should i get the powder blue out asap???