Marty (my orange guppy) has been having trouble for a few weeks. He's always a bit listless, when he eats he is not as ravenous as the others, and for this past week, he's been isolating himself and from time to time he would bloat up. The problem is that these symptoms would only last for a few hours a day and then the rest of the time he would be his usually guppy self.
The params seem perfect - ammon/
nitrite - 0,
nitrate - 5, water is dechlorinated.
The other fish in there have never exhibited these symptoms before & everyone seems happy healthy all the time except poor Marty.
Well, today I have home from class and found him in the corner & his scales have slightly pineconed (they weren't this morning)!
I'm going out right now to buy a
QT tank (

I should've got one sooner!) so that I can separate him because I'm not 100% sure it is dropsy, but I don't want to risk the others getting it.
I've read about treating it (25% water changes & medication available, remove carbon filter, etc.), so I guess I'm just here because I need some support. Marty was one of the first fish I've had & this is just crushing me. George (another guppy) is Marty's buddy & George hovers around Marty now like he's offering encouragement. I keep crying. I'm go get that QT right now. I'll go back out tonight and get anything else if I come back to any suggestions. Mind you, I only have a super walmart available until tomorrow morning when I can run to Petsmart for any specialty stuff.

Sorry this is so long. I'm just really upset.