I'm doing Himalayan Gold right now, and according to the breeder (arjan) it grows best untopped with 1 huge cola. this is because it's side branches are so huge that they become as big as the main cola so no need to top heh
Serious Seeds Chronic doesnt respond well to topping, the info from the breeder is basically the same as last post without 'Arjan's(usual) Hype input' about the side branches having those "main cola" size Side branches!