My Powder Blue Tang is on the verge of dying. The fish is on its side and breathing heavy. He has ich. I started the hypo treatment and it is down to 1.012. I noticed my tang had white spots again today, so I thought it was another Ich breakout. REALLY BAD. I did a 30% water change to reduce ammonia levels, but it is still bad. Do I have any hope to keep my fish alive?