I'm forever potting into larger containers, but there are also those where the plants do not do as well or don't produce a lot of offspring. Traded away a lot of the extras a couple of years back, so that helps too. They are always trying to escape from the pots.. I've found I have a bias against semps that run longer stolons or that like to bloom a lot. Makes it harder to keep them looking nice. Then there is always the case where a colony ill suddenly all bloom at the same time, resulting in a population crash.