OK, I have a trio of San Frans, and a teenage pair that have been in a separate smaller tank for over a year. (to grow on and also to quarantine)
both sets all calm, no problems. Looking at the health and sizes of my 'teenage' pair, I realize they are near enough adult size now and safe to add to my San Fran main tank.
I'm thinking as both sets are naturally slowing down and slowing on the amount eaten, it would be nice to brumate these together.....

BUT

I introduce the two sets and all hell breaks loose! my Sans Fransisco tank seems to have become a wild orgy!
Did the new blood line of Sans trigger things off?
so they seem a little calmer this evening, but, am I still ok to start brumating?

What do you guys think? does this happen in the wild? Any thoughts please?