I have had clowns in my tank for about 8 days now. I got two clowns they were doing find for the first two days in the tank. Then on the third day we notices he had been swimming in to my torch coral. Then the next day he was swimming side ways. He continued to swim like that until today when he died. I have had coral in the tank for 4 months. They have been doing well. I have the other clown and he is just swimming at the top of the tank. I feed frozen food 2 times a day. I do a water change of 25% every 2 weeks. So when i saw his swimming at the top of the tank i thought that it was a lack of oxygen. So i added an airline running oxygen into the return chamber where the pumps are. The whole tank hade bubbles and he was fine then today the same day that i found the other one dead he is gasping for air. I now have two airlines running into the display. And he is still gasping for air. salinity 1.025 Amonia 0 nitrite 0 nitrate 0 ph 8.2 temp 77f-78f.