i think topping is sometimes needed in small spaces to achieve a sog ( only when necesary ) ...off course it will stunt the plant

wich can be great because you can control the plant. one of my think different has been topped at day 15,and i dont know who did it not even to this day.it was topped so stupid,there is just one stem left instead of 2 main stems.and after 5 weeks the plant has 2 branches that are growing insanely.some plants love it and some not.alsoo noticed nice results with defoliation as well