I have had them in since the beginning of August. They melted as expected, but so far each plant has leaves one inch long, they are smaller than all of my plants foreground plants. I have a low light tank, 29 gal, PH is 8.4 use Aquarium Coop Easy green and root tabs. I have found that all stem plants I have tried to grow die. I am beginning to think the light may be just to low. Cryps grow, Java moss is growing, Sword plant is growing, and Aponogenton Boivinians is growing. I planted Indian Fern Watersprite, but barely growing in the substrate, pieces floating are growing great. First planted tank in 20 plus years of having aquariums.