Hi firefighter,
Thanks for all the help.

However, when I check my private mail,
all I've got is a link back to this forum. Just in case, my mail is
kcaand@yahoo.com.
All in all, my tank has been up and running for a month till now.
My ranchus are still surviving but they're still always coming up
to grasp for air. If I'm not wrong, either there's still not enough
oxygen in the water or they've fins problem.
By the way, what does cycling means?
How long have you been keeping goldfishes? Are you keeping Ranchus
as well?
