Cheers for the info mate.
I was just taking my time tbh as i have a plant flowering atm so needed cutting to take as long as possible to root.
The cutting was the top of a big lanky seedling that I also had growing on my windowsill.
I'm just doing a little experimenting if honest.
I'm going to train them nd keep them small until my other plants done.
I normally have them in my make shift grow box with a cfl in to keep them warm and they root much quicker.