clipping the tops?

I have seen alot of people clip the tops of there plants.. When is this done and how far.. I know it is supposed to allow the other branches to grow.. but I don't want to kill them ... anyone have experience with this??

First off, try the search function this is one of the most discussed topics on this site
Second off, when making a thread you should probably make it in the correct forum
This has nothing to do with hydroponics / Aeroponics
Here is a good link for you though, I'm feeling nice: https://www.rollitup.org/advanced-marijuana-cultivation/151706-uncle-bens-topping-technique-get.html

Whenever you want your plant to stop growing vertically you can "top" the plant by cutting off the apical meristem, which is the main growing point before manipulation by cutting. This will trigger what is known as apical dominance. Apical dominance is a natural response made by the plant. When the main growing point, apical meristem, is removed the plant triggers other lateral buds to become dominant and that is where the new growth will take place. you can also tie down the plant and watch as the plant bushes out and reaches for the light.

Thanks.. Doug_420..lol..but maybe you should smoke some more.. its hard to walk with a stick up your ass.. lol

Thanks Fadrian.. spoken like a true comrade.. appreciate it... respect