SEE HERE Well a small problem developed. We decided to move and bought a house about 40 miles North and that made it difficult to decide how to proceed with the Summer 2012 Hydroponics adventure. The short term solution was procrastinate but keep the plants going with nutrient. So there they are as of today ... a dense clump of tomato plants, the smallest "jungle" I've created to date. They are healthy but now thoroughly intertwined so that if I separate them I'll destroy a lot of developed roots.
The bottom line is that we bought a house and are very busy transferring stuff from this one to that one and this clump is living on our back screen porch just outside the door on a railing overlooking the backyard. It's pretty cool but it is now absorbing about half a gallon of nutrient a day and will likely increase and I'm not quite sure what to do with it. You get attached to your plants and don't like sacrificing them. So I'm currently trying to figure out what to do with a mini-jungle of about twenty-four tomato plants all growing in less than one square foot of 1 inch rockwool cubes mounted in a shallow plastic container. Stay tuned!