I'm so sorry, I know what you are going through. I have before. :( It was so awful. A little betta rainbow caught ich, and his ignorant owner got the wrong meds and he was suffering. So I had to euthanize. I cried all night! Might have to do it again soon, Dumbo has ich and he's not responding well to water changes and rid-ich. :( Going to try to get some AQ salt as soon as I can, but I think it's too late. :( I'm so sorry about Sir Lefty! :( Fin rot is just terrible, isn't it?
Sherlock Holmes - Male VT Lance Sweets - Male HM
Mirage - Male DBT Rocky - Male HMPK red copper
Daisy - Female HM Moonlight - Male HMDBT
Captain - baby betta
Gryffindor - very sick rescue HMDBTPK