Update on Ferdinand. I admit, he is looking worse, MUCH worse, but I think he may be on the mend. I bought some litmus strips and discovered that the water was very acid--at 4.5 or lower ph. The recommendations I've seen for tomatoes are at about 6.3 so I dug deep into the far reaches of my memory--back to jr. high science--and added some baking soda to the water until my litmus paper showed a color that looked closer to the 6.2-6.5 range. I also discovered that I wasn't using enough nutrients, at least according to what was recommended on the nutrient bottle. So I re-upped the nutrient levels as well. Then I pruned any branches that didn't have any undamaged new growth on them, hoping that Ferdinand will be able to focus its efforts on growing new leaves and--hopefully--flowers. So we'll see. If he doesn't look better in the a week or so, I'm afraid it's going to be curtains and I'll try again, maybe with a variety of tomato that I know a little more about rather than a random seed.