[Slick]

Additionally each population will reproduce at the planet rate (1M minimum per month) up to the domed maximum. The planet will be subject to the unhappiness effect for other population on the planet. See the FAQ for things to address unhappiness issues.

Not a real good place to be, but this can be a temporary storage location. If you have any cargo storage in ships/bases in orbit, I'd recommend moving the non-breathers there. This will undome the planet, but any population in ship/base storage won't reproduce.