What is your method for keeping good breeder stock small (auto & photo)

[Reefer]

I will say, the auto clones I still have going in my aeroponic cloner are all displaying the characteristics of their donors, but are still going strong at 110+ days. All I have to do it smell a trimmed leaf and it’s indiscernible from the long departed moms. This will help with limited space and working with too many plants