It's becoming rather expensive! But, I have a new 1.2 batch just replaced, and I've placed them in a whole separate tank and in a different room of the house.
If this doesn't work, I'll have to take your advice and get a new batch elsewhere. This is my 3rd batch already, so if it doesn't work then it's their supply that's bad.
I always quarantine new arrivals for 4 weeks, and I clean everything with 50% bleach & 50% water to sanitize, and the furnishings are frozen for 48 hours because I don't have a working oven to use.
Thanks for the advice!