Hi!

Please give us more information regarding the tank size and number and name of the habitants!
What are the water parameters?
PH/KH/GH/ nitrites and nitrates, T°?
How much and how often do you do water change?
Cheers
Yann
Hi Yann, sorry for my late reply.
Everythings are fine now as i try to ...

Hi and halo to everyone out there..
I'm newbie to cories.
My cories are dying of a kind of disease which i describe it as 'head in the hole', trying to treat in with formalin but in vain.... :(
Very sad to see that my cory is dying almost everyday.Search alot of website about this disease in cories ...