Hey folks I'm new to MFK and have been struggling to cure my silver arowana's fin rot. Its fins are frayed and torn and just wont heal. Its been months now. I have tried melafix but my canister is a ***** to reach and could not remove the carbon from my filter. On the directions its said if possible so I figured well maybe its not that big of a deal since they didnt strees it that much. Should I try another solution or try the melafix/ primafix with the carbon removed? Help would be apreciated.