B
Bdubs
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If you are staying within VPD parameters you’ll want 60RH and 50RH, lights on and lights off respectively. Thats assuming you are achieving a 75 high and 65 low swing. 75 is mold and pest friendly. 75 is only ever needed in seedling stage which only lasts a couple weeks. So, once your first set of true leafs come in, dropping humidity to 60-65 and 50-55at night should set you up for success in the VPD department until late flower.