crowntail curling

[peaches3221]

i have heard that hard water will make a ct Betta's fins curl. i have seen Bettas with curly fins, but i have never had this problem with my Bettas. the last time i tested, my general hardness reading was about 60, i think. is this enough to make my Betta's fins curl? and why does hard water do this? if the fins do curl, is this harmful for the betta, or ist it just about looks?
thanks!

[Neelie]

it has to do with water quality but i cant remember what it was exactly. its just looks. no harm done to the fish :)