Well,I just got back from school and now my guppy is dead

I cant buy anything because I dont have any money and my parents cant spare any right now

It's a 100 GPH filter(sorry,dont know it's brand but it's a wal-mart filter)
I do waterchanges once a week and vaccum gravelI havnt cleaned my filter in a long time to tell the truth

I have,a correction,HAD 2 platys (1-2 inches) 2 guppies(1-2 inches),a danio(2 inches) and a fruit tetra(barealy an inch)
I havnt added ANY new fish in the tank for a long time-I'll go change the water right nnow and hope it helps