Lowryder doesn't need a dark period, and it can't be cloned. In that regard, then, the story is believeable. In fact, I think Lowryders would be just about the only thing you'd really have a good chance of harvest in an AG with, since they are tiny little things.
I am wondering about the calcium needs of the plant too if they used distilled water and the 'tablets'. Unless the tabs have extra Ca because tomatoes DO actually need a good bit of it.