Ive taken the tank heater out of the eggs tank and put it in with my adult frogs and Ive set it to be around 70 and 75 degrees, this is what I was told when I was given them as a gift. Like I said also if these eggs have a chance I dont want to diminish that, yes it wasnt planned for but it was also not those little baby frogs fault that their parents were wrongly sexed. and Jenster, your website was so helpful thank you! i now know that my frog eggs are just continuing on their journey to be froglets!