Sorry to hear about your new ray dan such bad luck , same thing happened to my motoro if you can recall it happening ? There's not much you can do once curl sets in even with perfect water etc mine was feeding fine for a few months then a pH crash in my tank caused it to curl ( didn't help that my tester kit was expired never letting that happen again

) better luck next time bro don't give up on them just yet , have you took water samples to them etc in shop ? Get yourself down there and argue the matter you never know they may throw you something back as a good will gesture
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