When to top and begin 12/12

[Stormcooker]

Day 28 from seed.
AK-47 seeds from Serious Seeds
250W HPS
Ebb and flow Hydroponic unit
Ionic nutes w/ Floraliscious supplements and Hygrozyme

When should I top?
When should I 12/12?

As you can see, space is in issue, and I'm only running 250W start to finish.
I have 3 more feet of vertical space I can use, but the width and depth (35" by 19") cannot be changed. Keep in mind that all six of these plants may not be female, so I may have some more room when the males if any, come about. I'd like some good advice on topping, and when to flower, given the space listed and shown in pictures. I don't neccesarily want to wait until last minute to top/flower to max out the yield, I just want a safe bet and educated guess as to when to do so, so I have good space/yield ratio, and not taking any chances with waiting too long and overgrowing the cabinet, or acting to quickly and undergrowing the plants capabilities. What do you think???

Stormcooker Reviewed by Stormcooker on 03-16-2005. When to top and begin 12/12 Day 28 from seed. AK-47 seeds from Serious Seeds 250W HPS Ebb and flow Hydroponic unit Ionic nutes w/ Floraliscious supplements and Hygrozyme When should I top? When should I 12/12? As you can see, space is in issue, and I'm only running 250W start to finish. Rating: 5

[Stormcooker]

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[Stormcooker]

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i always top as seedlings at the 3rd or 4th node...

you already have a nice set of secondary branching happening so if they were mine i would not top at this stage unless planning on vegging for another month. if so, i would do it asap so the tops can recover enough to regrow for flowers.