Post # 1
I’ve seen both temperatures recommended for use with a deep freezer (chest or upright) with a freeze time of 6-12 months. CDC says -4°F or -20°C, but a lot of other resources, including kellymom.com, say 0°F or -18°C.
What is your deep freezer set at?
Post # 3
While I don’t have enought excess milk to need to store it in a deep freeze, I would go with either setting because the CDC one captures the temp range that kellymom suggests so you should be good either way.
Post # 4
I would go for the colder setting, but I’m paranoid like that.
Post # 5
honestly, both are acceptable. Id go with CDC but like @Pelikila: said, the CDC one captures the the kellymom one. Its fine at either temp for up to 6 months, theyre both cold enough. If you put it in the regular freezer, you can keep it up to 4 months.