I think you can go ahead and put the platy fry into the tank if you have tested the water...
however you can also take some of the foam or sponge from the cycled 10g.. and put it into the filter on the new 10g... this will cycle it almost immediately
I am sorry for your loss... don't feel bad or let anyone's comments get to you-- you didnt know any better as many new hobbyists don't... and unfortunately many fish stores out there couldn't care less
hopefully this has been a learning experience.. and I wish you the best of luck in your future fish keeping activities
however you can also take some of the foam or sponge from the cycled 10g.. and put it into the filter on the new 10g... this will cycle it almost immediately
I am sorry for your loss... don't feel bad or let anyone's comments get to you-- you didnt know any better as many new hobbyists don't... and unfortunately many fish stores out there couldn't care less
hopefully this has been a learning experience.. and I wish you the best of luck in your future fish keeping activities