tall plants

so i have this plant that is growing very very fast. 1 to 2 inchs in 24hours. is growing to big for my space. im growing with cfls and i have this 27inch plant. is there any way to stop the growth or slow down the growth of a plant?

i haven't tried this yet, i have a small space too
top the plant, even if in flower - may cut down on yield but i've seen others limit growth sharply by topping

Only top as a last resort. Try to tie it down first with some twine. Be careful with each bend and you'll probably need to adjust your ties until the plant stops growing.