Curled fins?

[aemaki09]

I have a male crowntail who came to me with curled fins, (see avatar) is there anything I can do to straighten them? I dont know If its from his water being hard before I got him, but he's not in hard water now, ive also tried some fin repair medication which didn't help...is this something that time has to heal or will he always be like this?
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[aemaki09]

I should ad, I've had him for about 2-3 weeks...I'm not sure if this matters?
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[MyRainbowBettaFish]

CT's fins usually curl due to hard water, or water with alot of natural minerals in it

[aemaki09]

But can it ever be undone? And if so how?

[LebronTheBetta]

No, I'm afraid. :( My CT's rays are curled, too. If you add in IAL it will make the water softer and provides beneficial properties.