Weird looking seedlings? (uploaded vid)

The edges of the leaves are curling up like if you had a low humidity range or high temps but yours is ok. The weird colour on some leaves is a variegation mutation. Some of the leaves are distorded , some have a puffy looks because the soil must be pre enriched and you are bringing more nutrients so the plant will handle that amount when she'll be older , you can cut the bio grow. They are looking like if they have some leaves mutations