when to flower? A little help

I have been in veg a little over 30 days now. I think its going on about 35 days. smallest plant is about 9 inches with the tallest at 15in with 11 & 12in being the average. the plants are og kush and strawberry cough anyone know when to start the flowering cycle? or if they are ready now or should I veg a little longer. What are the advantages (if any) or disadvantages (if any) to vegging shorter or longer periods? Bigger plants mean bigger yields smaller plants smaller yields? or not really?

My set up,
Ebb and Flow 4x4 flood tray
1000w MH
Rockwool Medium
Flora Dua A & B with floralicious
40 Gal Res (pump inside res to always keep water flowing along with air stone)

Then like I said above 8 strawberry cough (front 8) 8 OG Kush (back 8)
 

hgkdehs

Active Member
If they get big, then the light won't penetrate to the bottoms very well. You will end up with airy buds on the bottoms. If you keep them short and try to create a canopy, then all the buds will get decent lighting. When I was noobish, I let them get tall. Never again lol
 
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