Germination temperature for some other cacti

Can somebody help me with some information about germination conditions of:
1. Copiapoa
2. Neoporteria
3. Astrophytum
4. Leuchtenbergia
5. Trichiodiadema densum

I've not seen this post before, apologies. This is a Mammillaria forum, but I have germinated all but #5, and typically have them at 25C, in a pot in a plastic bag and well watered when bagge dup.