*sigh* My male died sometime last night and I know it was from some sort of sickness now.
I noticed a red outline in the shape of a circle on his side near his stomach. Inside the red outline was just his normal white stomach color but the scales were all pushed out in that area.
I figured it was some sort of parasite but I do not know how to ID it

Can I rid the tank of it at all by using a salt treatment? I also have that ich medication but I wouldn't think that'd help at all. I didn't know if there were certain ingredients that could help a little at least. I cannot get uptown for medication

I already brought up the medication for the male guppy's torn fin the other day to my mom and she started nagging about how we can't afford extra things right now, so aside for the salt and ich medication, I have nothing else I can use

I still have my 2 other little females in the tank and as far as I've seen, they've shown no signs as of yet. I bet I have to completely restart my tank cycle again though since I cannot get medication to get rid of the sickness

That brings me to another question really quick....
What is the point of having a QT tank if I can't keep my cycle going in my main tank with fish? -_- I cannot do a fishless cycle. I cannot get the pure ammonia and I have tried using fish food already but it clouded the water so bad and after a full week of doing a 90% water change, it was still so badly clouded I had to start the entire thing over -_-
Also, any ideas why every single guppy I have ever bought doesn't seem to live? I have had only 2 males so far and both have done great! My females seem to cause most of the problems. The first 2 died after giving birth (not one fry survived either -_-), one was sick and killed my male and other female and forced me to restart the tank cycle to get rid of the sickness, and now one female died died within 2 weeks that I got it, another died after being stuck in the intake tube somehow (it was covered with cheese cloth o.0) and 2 more females died completely out of the blue, apparently from whatever just killed my male -_- *sigh* Not one of my females ever lived more than 2 months