12/12 from seed? cfl grow 200w

so i started my seeds like 4 days ago and they coming on really well.... my greatest consern is the hight they are able to grow, 2 1/2 ft at most because of my grow space..... should i start 12/12 from now also when should i start using nutes i have got dutch pro A+B and dutch pro EXPLODE for budding stage for a month before harvest i have got canna pk 13/14 i want a yeild of around 1oz a plant if possible.. just need a little help if thats okay thanks in advance any info is greatly appreciated... oh forgot tosay im using 200w CFL grow bulb

Nice looking start, if you are having space issues i might suggest putting up a screen and looking into ScrOG, its quite an easy way to manage height and sometimes increase yield,
How many seeds do you have? you could grow them on 18/6 for a week or two and slowly work them back to 12/12, just to give them a bit more of an oppotunity to grow a little, if you end up using a screen you could veg them for up to 4 weeks, get a much better yield too. looks like you have lights and nutrients sorted though, but if you're doing more than 4 plants i might recommend adding another light, another 200w would be great and your plants will thrive, but if your budget doesnt go that far a smaller light is good too. good luck

thankyou for your reply i currently have 2 thai seeds in there well sprouts now 1 is starting 1st set of leaves.... ill be getting some autos soon all been well around 20 of them but only going to do 2 at a time as i havent got money for a bigger space or the electric bill also when do you recommend me starting to ScrOG or LST but i have been told they pritty much do the same... stay green and get high....

im not 100% i havent ScrOG'ed before, im pretty sure you grow the plant until there is enough branches to put through the screen when it grows, and then go to flower

Tie the branches down and it will grow horizontally and wide rather than tall. Good luck with it.

thanks for replys you have been a great help thanks guys (y)