I did a water change 2 days ago and now my betta is sick. He is lying around and won't eat. His red skin is a strange grayish color and he is breathing rapidly with his gills while lying down. I put eliminator for 2 days now and no change it seems he is getting worse. Any other meds u know of to cure this? He is housed in a round fish bowl and water changes done every 3 weeks since i got him in march. Anyway please let me know what i can do. Thanks