First run - Sweet seeds autos x 5

I've got 5 autos just started under a 600w lumatek zeus in 1.2m x 1.2m tent. Ac infinity 8 inch extractor fan with carbon filter (plans to upgrade tent size) with 6 inch black orchid intake fan (currently off) Soaked for 24 hours then planted all late evening in the 11th Jan straight into 12l fabric pots with Plant Magic Supreme Soil and a tiny sprinkling of Old Timers Granules - started popping up on the 15th and were all up by the 16th Lights are on 25% using dimmer and about 36" from seedlings