here's what i did, I bought sinking cichlid granulates, (made to feed cichlids, anything can eat them without a problem) and my cory's gobbled them up.
you should try that. i dont know about the plastic bag idea though...never tried anything like that. feeding them with the lights out would be a good idea too, as stated above.
you should try that. i dont know about the plastic bag idea though...never tried anything like that. feeding them with the lights out would be a good idea too, as stated above.