Ok, so I came back from holidays and saw that my Oscar, and 3 parrotfish cichlids were suffering from head and lateral line erosion. Sadly, within this month, all three of my little parrots died :( I only realized now that they died from HLLD. My Oscar should be next, he's been with me for 3 or 4 years now and idk what I'd do if he went away. I want some quick answers as this is an emergency.
I started using API Melafix because it heals open wounds and at first I thought those were just severe scrapes from rocks, gravel, etc. It kinda helped but then I had big exams, which really didn't give me any time to do anything and I had ran out of Melafix so the disease got a teeny bit worse.
He also suffers from Fin Rot. Melafix fixes this apparently. My water is a little bit cloudy (due to the Melafix I'd say). And I heard that the carbon inside the filter usually causes HLLE disease. Should I remove my carbon from the filter ? It's a 250 liter tank (60-65 gallons I think) amd I use a Fluval 305 I think (not entirely sure, but definitely it's by Fluval)
I would like to know what happens if I remove the carbon, can I remove it without killing my Oscar ? And is it suggested I remove it in this situation ? Also, I'm going on a one month holiday at the end of July, I want my Oscar to hang in there until I get back at the start of September.