Guppy Expert Needed

[alphauk101]

i had a tank with 10 guppies init
the tank is fully mutured and they are feed well
but there about a month old and there all dying anyone help

 

[fi$hys]

It is probably bcause of the amount you bought all at once.It could be the temp but what are your stats
Mat

 

[Bryan1957]

What are the water stats? Just saying the tank is fully matured doesn't help. What do you feed, how much and how often? What is the tank size and how long has it been set up?