I did the Jackerspackle thing and it told me overfert. I am pretty confident that pH is not the problem. I check it pretty often and its always within range. However, I will check the bin pH once the lights turn on tonight and see what it says. I think I am going to try to change the res again and not put in as much nutes so my PPM is a little lower.

The pictures of calcium deficiency I have seen don't really match what I see on my plants. The edges of the leaves in the pics of Ca deficiency look burnt and almost rusted, where as the yellowing I am seeing is a straight, bright, solid yellow throughout the whole leaf, and then the leaf will shrivel and die within a day or two.

The more I read, the less idea I have of what the problem really is.