Last Sunday I purchased some Superthrive, a D. Spathulata, S. purpurea, and S. x Judith Hindle. Well they all arrived yesterday. Very healthy looking and beautiful, but the there is no liquid in the pitchers of either of my pitcher plants. I just wanted to know if the pitchers will fill up in a few days or if I should put some water or milk or something inside of them. Please help me!