definitely not too late! I would try to get it up a bit higher. The hatch date may be delayed by the lower temps, but if you can get it to settle between 99 and 101 you will be fine.Is it too late to increase or I can try and get it up a tad and expect the hatch date to extend? It stays at 99 for most of the time but does drop to a low of 98.2 before the heater kicks on again