I'm not sure exactly what you're asking but If you wanna keep it in a smaller pot then they'll be fine. One root sticking out of the bottome isnt a problem. Eventually though the roots will want to expand and reach for my water and they will be confined. This is called "root-bound" if it continues the plants will dry out easily and grow much slower. Your best bet is to transplants to give the roots room to grow but root-bound plants are alot better than getting busted.