I was so excited to get this self watering tomato planter and put my first tomato plant in it. It seemed t be doing well that I purchased 2 more tomatoes planters, However, my excitement ended when the water tube stopped working and would not go up or down and did not seem to regulate the water anymore and my tomato plant ended up with Blossom End Rot. I am very disappointed in the water tube breaking and the other two seems to be ok so far but the piece in the tube that goes up is not just the stick in it.. Is there a replacement for the water regulator?