10-22-2013, 02:15 AM
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Cories do not like salt at all. Some can handle it for short periods in small doses, but they do not do well with it.
Shimmying...as in sorta waddling side to side when swimming, or smacking into things? If it's bobbing side to side, there's a big possibility of a swimbladder issue. Feed her a quarter of a cooked, skinned pea once per day for about a week, should clear her up.
If she's flashing(slamming into things), it's most likely a fungal or parasitic infection starting(like ich) or from PH changes...if you're trying to CHANGE the PH with them in there, that's why she's having trouble. lol That can irritate them pretty good, and big changes, or constant tampering, can hurt them. That PH is high for cories, but fine for mollies. Hardness needs to be up there too(they like General Hardness around 15+ or so, they like nice hard water).