Well it might have been 24 hours but they might hatch late because of temperature. So just be patient and everything will come to you:)!!
Good luck. also i bred ,y VT's in no heated water at all and its october and sort of cold in NY and my 5 week fry are still living. Its weird because i do regret not using a heater. Please!! please!! dont do what i did! i did it out of frustration and stupidity!
they are healthy and swimming but i dont want anyone else to do the mistake i am making because i might be paying for what im doing as i speak. sorry everyone for my ignorance and breed the right way if you even are going to breed. Thank you and good luck to you!