YellowTip Slight curve down

Hello GreenThumbBluePrint, the problem here is overwatering. Let the soil dry till the top inch is completely dry before watering again. To prevent this you can either continue watering from the top but only water on the outside of the pot. But you can also water from the bottom. You can place the pot 1 minute a day in a bowl with water that covers the bottom 2-3 inches from the pot. I do prefer the last option because this way the seedlings always got enough oxygen available at the roots. And they need to search for the water (cannabis seedlings love to search for water). And while doing this they develop a healthier and larger rootsystem. Enjoy your grow!