Light Cycle help for sprouts...2 plants that just sprouted under a 12/12 l

SilentSmoker420 said:

Can I place 2 plants that just sprouted under a 12/12 lights cycle and them not flower for an amount of time?
If so, how long do they have before they start?
The reason I ask is my 2 baby med plants just fried in their case and I can't use it again till my flowering plant buds( no light pollution)...

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