Germinated in the 1.5 inch rockwool cube (gro-block by gro|dan). Cube was soaked for 24hours in pH 5.8 filtered (not RO) tap water prior to planting seed. Rockwool cube hole was gently pushed closed. This is 6 days after planting and 2-3 days after sprouting out of the cube. It is Dinafem White Widow Auto Fem. I received the seed about 6months ago. It was kept at room temperature, in darkness, with a desiccant until planting. It's been Indoors in a humidity dome at around 80F and high humidity and 1 meter under a California Light Works 440 on 18/6 cycle. The lower 7-9 mm of the cube has been dipped in nutrient soup twice. The soup was filtered (not RO) water at 5.8 pH with 2mL/L of SugarDaddy and 2mL/L of Root66 resulting in 260 ppm TDS. There has been some light runoff into the grooves of the tray. No pests have been observed.
Don't use a dome for seedlings - just cuttings. Don't use nutrients for seedlings that small. Give it plain water for a week it should still be fine.