Okay so i found out through water tests exactly why my two bettas died... the water was to acidic because i didnt stay by them when they ate and net the uneaten food out. and this caused a fungal infection. ( the smoky stuff all over them) So i cleaned the tank according to the fish guys directions. And after the 75% water change and netting out any debris. And they tested the water again and the water wasnt as bad but still not perfect so the fish guy said to get an air stone or something in there and the water should be better. So i got a new girl from ppet smart. ( very healthy.) and she is so CUTE!!!! i LOVE her!!!:-D anyways i need to buy a small airstone or something within two weeks or in two weeks she will go belly-up..... But im getting it this weekend so yeah. ( it is supposed to help with something about carbon dioxide? lol.) anyways im gonna just keep an eye on her and hope for the best. right now she has no name.