Originally Posted by Dwarden3
2.5 gallon tank, unfiltered, heated. Normal water temp is 81F. Been up for a little over a week. 25% water changes every other day. I've been trying to feed top fin betta pellets, but he rarely eats them. I have also tried omega one flakes. Haven't checked parameters because I am changing water so much. He has small pock marks on his head. The look indented. Nothing has come out of them. My question is, what are they and how do I help the fish?
You may need to get a different brand of food such as Omega One or New Life Spectrum. I'm not sure but I don't think Top Fin is a quality food nutrition wise. He may not be eating them because he doesn't like them. My light colored Drangonscale has pock marks, they're nothing to worry about, its just part of his look. Since you're not running a filter you really only need to do 2 50%+\- water changes per week.
As for the petrol smell, that I have no explanation for. What water conditioner are you using? Are you making sure there's no leftover food sitting in the tank? Do you have resin decorations? I know some of mine have an odor but I only smell it when I remove them from the water.