I thought I figured everything out and had my beta under control. He had gotten sick because I bought him and listened to the pet store people about how to care for him and realized it was wrong. SO I bought a new tank, heater, filter, etc. He seemed to be doing better - eating, swimming around and now I just got home and he is floating on the top slightly turned to his side and it looks like he is dying. I have no idea what to do because it started with his color loss, scales/fins looking greyish green, etc.
I don't know what to do and feel he is dying and won't make it the night. His gills are barely moving.