l.michelle - Yeah, the one I got is a one-off thing though, instead of using continuously for 7 days. So if there's no improvement, I'll do the water change and repeat medication.
He's eating now, he actually swam up to the front of the tank and looked at me for a while so I gave him a pellet and he swam up and ate it then - maybe just a coincidence but you never know, lol!
Unfortunately, I think something's nipped my orange dalmation betta who I've now had to remove from the community tank and treat as well - it doesn't look like fin rot but the cotton stuff on his fins instead - Poor guy, he's looking the worst now just kinda floating and occasionally going on to his side. But if you move anywhere near him he'll start swimming in circles.
Having a bit of a bad run with fish at the moment, so it's a total drag. My black knife fish(who was going to get rehomed as he grew) got caught at the side of the filter as well, when we found him he looked as if he was in a bit of a shock but was swimming and stuff. Put in some stress coat for him, but found him dead this morning.
Silly guy liked to sleep like in between the tank's back panel of glass and the canister filter, I never thought he'd get stuck though - but now the filter has been moved, so there's a big enough gap for ANYTHING to get through it.