I am not famililar with the hovabator-- but do use the LG. What I noticed is that the hatched chicks started to die when bator was filling up with hatchlings. Now I remove chicks , only leaving the newest ones to fluff out.
We're up to at least 15 but I think more, it's hard to count them I think I will get them out, the humidity is spiking so much you can hardly see in the windows anymore.