I do not believe that eco-complete is harmful at all to cories. As long as there is good water maintenance,there should be no problems. I've have them in various tanks with Eco for over 4 years. There has never been any signs of barbel damage, etc.
Rena Pimp # 171 2 Rena Filstar XP3s
Last edited by jersysman; 02-12-2012 at 12:53 AM.
Reason: Changed to emphasize water maintenance