flowering help

ok i have WW plants that i would like to flower.... the biggesest is bout 13in and the smaller ones are about 10in. they dont have preflowers but being that this is my first time i did not plan ahead for room to grow so gonna need to flower asap being as they get 2-3 times thier size in flowering lol will deff have more room next time but for now i wanna flower these so my question is that i dont have the flower nutes until friday is it ok to keep on veg nutes till then? and if i can go ahead and change light to 12/12 should i put in my HPS bulb? also should i do like 24hr dark period and then do 12/12? thanks guys sorry for all the questions

anyone????

It's OK to wait for nutes and no you don't need to do a dark period before you switch.

I always start my plants day @ 7am, so at first I go from 7-1. Then when it's time to go to flower, I switch my bulb and go from 7-7.

so when i get my flower nutes should i use the same amount of those as i do veg or should i lower the amount

you can goto the GH site and get on their nute calculator

newathydro said:

so when i get my flower nutes should i use the same amount of those as i do veg or should i lower the amount

Click to expand...

Every bottle of nutrients I have seen comes with directions.

If not then their website has a grow guide.

if you are worried about size, look into LST. tie down some tops and save your room....if you topped your plants....

In my limited experience I think it is better to continue giving veg nutes through the stretch.

Flush and switch to flower nutes when the buds actually appear, but not when the preflowers appear.

In my first grow I switched to bloom nutes when the preflowers appeared and that's when all the leaves started yellowing early and things went down the shitdrain.

I think it's cus the stretching phase is still part of the veg phase so they still need nitrogen or a mix of veg & bloom.
That's from my limited experience though, someone else should chime in.