I planted 6 seedlings in 6 pots [ 6" deep x 3" diameter ] Today, they are 1 week old. The leafs have outgrown the 3" diameter of the pots and noticed on some of my transparent pots [ plastic bottles ] that I can see many white roots lining the side of the pot all the way down to the drain holes. What I had planned for transplant was to use a spade to remove the plants from the pots and transplant them to a bigger pot. However, now I'm afraid to damage the roots that line the sides of the pots. What are your suggestions?