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Re: Cory heavy breathing and dying

Subject: Re: Cory heavy breathing and dying
by fcmf on 20/8/2020 21:46:40

It may well do but, more importantly, the high flow rate could well be the cause of the cories hiding under the ornament. I've found some species of fish particularly affected by flow rate, some fatally (inability to cope with it on entry into tank seemed to result in them struggling/'drowning' within minutes) and some stressed and hiding in quieter parts of the tank, while others struggled as they became older and weaker. It might be that your young fish are struggling, while the older ones are more robust and have got used to it. I would definitely lower the flow rate for now and see if that helps at all - both in terms of the fish and the nitrates level.