Have flame angel in 10 gallon quarantine for 2 1/2 weeks. First got him saw his fins were a little tattered. Saw him flashing against the pvc couple time. And his face and around gills is pale in comparison to the rest of his body. Treating with second round of prazipro. Eats well, never had a problem with that. After he eats his face gets a little more pale and swims in the air stone bubbles, down vertically. No spots on him anywhere, his fins have grown back. I thought it was flukes. Should I do another round of prazipro. That will be the 3rd? Tank is fully cycled. Test periodically for ammonia.