Egg-Candlers & Egg-Scales

Egg-candlers are an indispensable tool in hatching - not only for checking the fertilization of the eggs but also for monitoring the development of the air cell and embryo during incubation. This allows you to check whether you are incubating with the correct humidity or whether adjustments need to be made. Weighing the eggs is an even better option because as the air cell enlarges, there is also a corresponding loss in weight, which can be objectively measured. However, since the effort involved is significantly greater, this is usually only done for very rare or expensive species, and/or when the eggshell is so thick that candling is difficult.