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I gradually let down to a 16/8 from an 18/6 from 5am-9pm

I'm interested in your plan.

Are you adding extra artificial light then now and trying to keep them vegging all the way until next fall? Or are you trying to hurry and get the flower right now outdoors? It's possible that if your trying to flower now that you might run into issues with too much light towards the 7 week mark.

We were trying to supplement with lighting from leds. But that didnt work out as our bad breaker prevented that and almost caused a huge house fire...so just rolling with the punches. Just a winter crop. But our plan now is to just add heaters and increase the temps and secure the greenhouse more to allow heat to stay in. Fans are next just getting temps up first. I dont like messing with light cycle too much. Im not going to supplement with any lights just use the sun we are getting and using power for heaters only. We have our electrical box being worked on later next month

Just jumped back on your timeline and it looks like you'll be about perfect on the 8 week mark for flowering. :)

Hope the plants turn out great bud! I'll be following the progress.

O i know im praying i dont get the strechy bud thing/frankenbuds towards the end where the plant wants to veg out again...

For lighting, you might find this site useful. Right now the lighting is great for flowering, but the days get longer as spring approaches. :)

https://www.timeanddate.com/sun/usa/las-vegas