Low electricity arctic sativa grow

Germinated Moby Dick, Jack Herer and Critical Kush seeds in glasses of water (on a seedling heat mat, it's very cold in here). Temp of water was 23C. All of the seeds had tiny sprouts in 2 days. After sprouting I moved the seedlings to 10cm plastic pots. Substrate is a coco coir based mix with perlite, clay pebbles, worm humus etc. Growing these in a tiny greenhouse for now with 23C air temp inside.