So update I got the two guppies who died, two days later all my tetras had ich I did what I told but I lost them all that was two weeks ago my platies were fine and still are. Because of the ich I have bought and put up a qt tank today I got three more tetras and they are in the qt tank.
2 Platys
3 Cardinal tetras( In QT tank)
I have gravel substrate but I would like a school of corys I was wondering if that would be ok or not if it is I would want to do this
2 Platys
5 Cardinal tetras
6 Cory's
1 Honey Gourami