When to switch, Halide -> HPS vs. 18/6 and 12/12

Ive been looking all over the forum but to no avail...

I always want was is best for my plants even if it is a minuscule improvement. Especially when it is something easily done, like a process. With that being said I am getting ready to flower, and wondered as I am runing 18/6 MH right now if I should switch to 12/12 with the MH? Or is it better to switch to HPS continuing on 18/6 for a few days and then switching to a 12/12 light period?

OR

Is it better just to switch to HPS and 12/12 simultaneously?

Anyone ever heard of anything like this?

Remember this might be a miniscule improvement, but when it is something so easy like this... why not cater to the plant as much as possible?

Cheers

Hps for 12/12

Mh is for vegetative growth.

I like to keep my Mh going for the first 2 weeks of 12/12 to keep the strech to a minium, you can still get a fairly nice harvest from using a Mh too.

Yup, Go with the Halide into a couple of weeks. If you switch over immediatly with the HPS it does seem to stretch out further.
I keep the Halide on for 3 weeks.

Here is an example. under the Halide flowering 2 weeks
and small Hps for the Sides.
You can see how if I switched too quick they might have got out of hand

Joe Camel said:

Yup, Go with the Halide into a couple of weeks. If you switch over immediatly with the HPS it does seem to stretch out further.
I keep the Halide on for 3 weeks.

Here is an example. under the Halide flowering 2 weeks
and small Hps for the Sides.
You can see how if I switched too quick they might have got out of hand

Click to expand...

Well shit, I didn't catch your response until it was too late, and sorry for the slow response. Switched to HPS to 12/12 right away and I definitely got some stretch going on... specially a monster Sativa, but answers why that happened. Im actually going to change up the room a bit and probably veg under CFL for 18 or 24 then head for the hps 12/12.

Does the same stretch happen if I move from CFL at 18 or 24 directly to HPS at 12/12?

Should I set up a small "room" with CFL at 12/12 to get the little girls ready for the HPS 12/12 after I move them from the mother/cloning veg room?

Thanks dudes