400w MH or 400w Gavita HPS

starass

Member
So i am growing 6 auto flowers right now they are about 1 1/2 weeks sprouted out of the ground looking great and currently i have the 400w gavita HPS in the socket because it has a higher lumens then the MH correct? Should i still have the MH in and wait to use the HPS untill i see flowering? Thanks starass
 

frizzlegooch

Well-Known Member
different light spectrum, and ive read that yes hps lights have higher output.
What you said is correct. switch to hps on flower.
 

Billy Madison

Well-Known Member
use mh until upward growth has stopped. keeps the nodes nice and compact. then put the hps in to fill up the buds.
 
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