I'm a new fish owner and hence have so many questions right now that it scares me! Let me give you some background first. I have a 63litre tank to which I added my first fish on October the 30th (2 cardinal tetras, a bronze catfish, 3 guppies (2 males and 1 female, I now know this is a terrible ratio but the dudes at the fish store didn't tell me!) and 1 cherry barb). Since then I've been doing regular water changes (once a week or a little more frequently), changing about 15% of the water with a syphon (to get rid of all the crap from the bottom of the tank). I've been doing regular water tests and have had good results for two weeks now. I think the cycle has been established and the water is now safe for the fish.
So on Friday (the 4th) I went to one of my local fish stores (this is actually a chain pet store called "Pets at Home" in the UK" and picked out five new fishy friends to bring home - 2 female guppies (to help out my poor single female who is being continuosly pestered by the boys), 1 albino catfish, 1 black neon tetra and 1 dayglow tetra. I also got a load of new plants (the ones I had before that mostly died!). Everything was fine and they were all very happy and getting along. But just now (Saturday night, about 20 hours after they've been introduced into the tank) I noticed that the two new tetras (the black neon and the dayglow) seem to have some white spots on them, which weren't there before. They're very small - the black neon has two (one on top of his head and one on the bottom fin) and the dayglow has quite a few more all over her fins. They almost look as if they're stuck on, I at first thought they could possibly be grains of sand (I have sand as my substrate, not gravel). But I think that's just wishful thinking! I think you can just about make it out on the pic if you try hard enough. I haven't really spotted any other symptoms yet - like different swimming patterns, or fins getting stuck together, or flashing (though I don't know what that means!).
Resized to 78% (was 1024 x 858) - Click image to enlarge
Anyways, I'm pretty sure it's the white spot disease. But my question is I'm not sure how to treat it. Everywhere seems to suggest something called "Quickcure", but I've read on some places that it may be too strong for tetras (and cat fish, actually). Also diluting salt, but again I don't think it's so good for the species I have from what I've read. I also have baby guppies in my tank (separated in a net from the adults for now) and am worried about how the whole disease/treatment will affect them. Can you please suggest what I could do? What treatment to use, how often, etc?
I think the parasites must be at the point in the cycle where they haven't broken and fallen to the bottom of the tank yet (I've been reading up!), so that means a good time to treat them should be about now, in anticipation for them to break out? My water temperature is at about 26 degrees C (I think raising it to about 27 should help with the treatment? How much is the highest I can raise to for my species?). I really don't want this to infect my other fish! They (and I!) have been doing so well! Please help.
Is it better to separate these two from the others before the parasites fall off them? I don't have another tank though (and unfortunately can't afford another one) so it'd have to be putting them in a jar without filters/heaters or something like that!!!
I'd really appreciate some advice on this as soon as anyone can answer. I'm very worried
Thank you guys!!
Oh, I should also mention that the black neon and the dayglow came from separate tanks, not from the same one.