Both seem to be doing well after one week in New grow tent, a big difference compared to the the older OG and AK at that growth stage when without tent.
Regarding EC levels.
Seedlings 0.4 (400) or less
Vegetative 1 (1000) or less
Run pH correct water to lower EC to required growing phase, this would mostly be Seedling stage.
My Coco /Perlite mix is for Seedlings this time, I will lower the EC levels to around 0.4 with water. Checking the runoffs before introducing nutrients.