I am having a problem with some of my tomatoes and was wondering if anybody could help me determine what it is. I did some research and the best things I could come up with is either too much water or a potassium deficiency. I don't think we have had too much water this year, but I don't know. Some of the tomatoes have this white cystal like stuff in it that almost looks like sugar. The ones that are like that generally get really soft. Does anybody know what that is? Does it sound like it could be a potassium deficiency? If so, if I add more potassium to the soil now, will it be in time to help the rest of my tomatoes for this year?