Stalled Seedling

Dump and start again... Should be further along. Keep pH in soil between 6-7. Always check pH after adding nutes to water. Don't worry about run off, just water with pH 6-7 until you have runoff. Always allow soil to dry the first few inches from top before watering again. Seedlings need moist soil at all times but now flooded. Add Humic acids to help breakdown unhealthy roots and keep soil healthy. Remember to add calmag if you are in a soft water area or using RO/deionised water. They like lots of light so make sure to give them enough. Good luck

Check the pH of the water, it's very important. At the beginning 5.5 then around 6.8. It also seems that the soil is soaked with water, that's not good; the roots do well in humidity, not in wetness. Good luck 👊🏽🍀