Ok, so this is a long story, I started a 10gal around june and since then every fish I have put in it has died. First i cycled the tank by running the filter on an established tanl for about a month.I Started off with one male guppy and he imediately got sick and died, then i added 4 female guppiea over a month and they all died, then i added two females and a malethe females died but the male survived. After that I got discouraged and left the male and he is still alive(not for long ) but then i had to put 2 baby angels in the 10 gal amd they thrived and grew to twice the size so i had to mave them to a bigger tank sooner than i had wantex so after they aurvived i added two female guppies and after about a week the femalea and the male are in a pile in the corner dying (idk if the male is, i think he ias trying to mate with the females still lol) so what could be wrong, im thinling amonia poisoning but idk how to fix it. I have an air pump in the tank and a thermo set at 74 and a bare minimum filter. Sorry foe the jumbled thoufhts and bad spelling this is on my phone btw i have a 50, 55, and a 25 so im not new to having fish. Could it just be that guppies arent hardy and idk my water #s but i got it tested at lfs and they said it was fine