It was my intention to take the young snails to the closest fish store (Detroit Lakes, MN) before now, but it is roughly 50 miles away and the weather turned to normal winter weather! The roads are clear now, but this past Sunday was the first day above zero in awhile.
I have test strips for ammonia only, but I don’t have any liquid testing kits.
My quarantine tank is 10 gallons.
I’ll change water again today, and go from there.
Thank you, everyone, for your help.