Reptile & Amphibian Forums

I just received my first clutch of eggs ever from my pair of cresties, but the eggs, when i first found them had a slight yellowy orange swirl in them, not much but it was noticible. After a couple of weeks of incubation i have noticed that this color has worsened and mold has been growing,but the bottoms are almost completely white. There are even red marks where the egg meets the vermiculite. The eggs looked pretty healthy when i removed them, but they are worsening. Am i keeping the vermiculite too moist, and mold is growing and causing discoloration or are my eggs undercalcified? Please help!

eggs might have been infertile to begin with. how soft were they?

when an egg begins to show any sign of mold it is infertile. the eggs almost seem to have a natural resistance to mold. the only way it would mold is if you were using an incubating substrate that is contaminated.

Hmm i guess, why are the eggs unfertile what does this mean, actually they were pretty hard when i first removed them from the cage and they still are. I was actually surprised when i took them out because i have heard that they are semi-soft.

it's not necessarily undercalcified. they lay infertile eggs because the male does not fertilize the female's egg(s). the female may still produce an egg despite whether it is fertilized or not. this is typically the first clutch for a female, or the first clutch of the year.
if the egg is undercalcified it will show " etching" or a rough appearance. use CGD and dusted crickets when fed. also if you're feeding babyfood you may want to add a pinch of calcium to that to make sure the female is getting enough.
infertile eggs are usually not buried, mis-shapen, or slightly more yellow than a fertile egg.