he did not take them and told me to flush them because they arent worth it

   i could smack him  
those people do not deserve to have any pets, neither friends

Fin rot is a tricky disease that most beginners can't recognize until the fins are obviously frayed. When I look at the pictures of your fish, they do look a bit uneven in the edge, and especially the spotted one's fins look strange. It look like his dorsal has been hurt as there's a piece missing from there, on the front edge. And his tail... well, it looks like the upper lobe is more or less destroyed. Any idea what has happened to him?
If I were you, I'd continue treating, and observing them closely.

And about flushing, the main reason you shouldn't do it while the fish is barely alive, is because it's a horrible torture to the fish. And the reason you shouldn't do it to a dead fish, is because you could be spreading disease to the local waters, like ditches and the like.

You know that without treatment, it will get WORSE. Just keep that in mind whenever you're dealing with sick fish! Treat in time, and treat until you're sure that no more symptoms are showing on the fish.
They will be fine as long as you treat them and take care of them and their water

Hi Elli, it is ammonia and nitrate, they are shocking.
do a major waterchange, min 50%, better 60%, add plenty of beneficial bacteria and conditioner. But the beneficial bacteria are very very important to add. do you have them? do you have a detoxifier for ammonia, nitrite and nitrate? I do have PRIME from seachem, there are also small bottles available, they are not expensive

hope all will turn better for you and your babies very soon. good luck

I can go get a detoxifier tonight. I put bacteria and tons of water conditioner in yesterday and his eyes cleared up a little and and he's eating a ton and swimming around I'm going to go get this tonight (Link is not visible to guests. Please register to view.) and that should work well.

Well done, Elli 

keep doing 12% waterchanges, ammonia should be 0.00 ppm too.
The only strange thing is that as long there is ammonia you should also have some reading of nitrite.
Keep testing too.

With those fantastic aids like bacteria boosters, your tank should be cycled soon.
Please keep posting how things are going and how your tests are. Thanks.

I am proud of you, you do an excellent job there

THANKS, Elli

we got our 10 neons yeastersay, they are together with the betta and two catfishes in the small tank which first was home for our first 2 goldfish.

the reading of  ammonia could be a trace left from prevoius tests too 
Do you still treat with melafix?

You can give the sponge and the filter parts a wash and rinse in a bucket with old tankwater, to remove poo and things...

well, maybe the colour print of the reading chart is not quite 100% right, but 99,9%  or there is just a tiny fraction of it in the tap water? who knows...

Yes, neons, a betta and 2 catfishes are a nice community tank. Maybe just a small tip for you: we started the tank with the betta only, but we bought him already out of a tank where he was with CF and neons. So he is used to tankmates.
A week later we got him the 2 CF. And only now ( yesterday ) after 4weeks we got the neons.

BTW: you'll get your tank right with your GF shortly and then it is easy to care for them too, you'll be fine.

You're doing well, Elli, it may seem to you that it is not enough, but it will be fine.
It is just that your tank couldn't cope with the "load" of fish so quick. The water should clear soon, keep doing those waterchanges.
It will be cycled when it is clean and the waterparameters are ok.
Then you still should test once a week and do your weekly waterchanges.
I know, at the moment it seems to be never ending but it will settle.

We had to do it too, as the big tank wasn't cycled, but there was no choice but introduce the fish asap. Now all is settled.
And our little buddies are doing well, thanks for asking  If you like, you can have a look in pictures and videos on this forum 

I'd like to add, that neons can grow even 2 inches if kept well d: But I have only seen few fish like that in my life, and that's in the most awesome fish shop in town *cough*

And really, it's easy to keep fish, as long as you've provided enough space for them from the start, but I know how it is not knowing. So it happens sometimes that it seems harder than it has to be