I've forgot to turn my heater off once before. Didn't notice it untill I smelt melting plastic and heard some cracking sounds
!
Hope they pull through, hate loosing fish to this poxy white spot... so annoying!
To be fair I only noticed mine because my Keyholes were kinda 'changing colour' so I read up about it and found people said if there was a disease in the tank this could be why they are going this 'changing colour' thing. Next thing you know after a close-up I seen a few white spots!![]()

white spot is a right pain when it takes a hold of the fish, good thing you did look up why the keyholes changed helped you get a hold of the white spot before you got to my stage.