[Royal queen seeds(shining silverze has)] so, i have on 400 watts of Sodium (on a flowering) till 12/12 left little time (maximum 4-5 weeks) and i want to return for 1 week to metalohalogen on 400 watts (over vegetation) on 18/16 what it will do

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Don’t understand your question exactly.

I understand your using HPS bulb now which is correct at 12/12 flowering. How long has it been in flower? If you’re to far into 12/12 you risk stressing your plant, if it’s only been a day or two it should be ok to continue veg cycle.

Happy Growing!

At this point you should not be going back to veg lighting hours it will shock the plant

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