I recently brought home a Huma Trigger that is about an inch and half long. After a couple of days I started noticing that he was getting stressed induced ich I have decided against using medicine because I have a star fish and crabs. He basically spends his day laying in the sand. I bought some garlic and have been soaking their food in it. I also lowered the salinity to 1.02. My tank temperature is 78. What else can I do for him. I am worried.