I've been trying to dial in VPD for the first time. And ive been struggling .. they sprouted 6 days ago. A Northern lights autoflowet sprouted first.. but I had the VPD low . .4-.6 and the temp lower 69ish. Why? I don't know.. The other 3 were sprouting slowly. So I turned the heat up to 75 and kept vpd between. 4&.8 and the other 3 started going strong. And after the first spiked leaves started showing up I turned vpd up to .8-1 But the NL slowed its grow. The other 3 are a node ahead now.. So last night I tried dropping vpd back down to .5-.8 NL AF sprouted another node. But then this Green Crack here it has creases in the leaves.. Im not sure what the creases are. Could be large range of humidity over 24hrs.. green crack is not an auto.. and they are all in the ocean soil the blue bag. Too early to be cal mag or nutrient anything.. Temps been consistently been between 73 and 75. I'm struggling to get humidity stable period. I typically have a 10% bounce over the course of an hr. Which is prob too much.. Any guidance is appreciated!